UltraGauge EM Guide

____________________________________________________________________________________________
Page 1/55 UltraGauge™ EM User Manual www.ultra-gauge.com
U
Ul
lt
tr
ra
aG
Ga
au
ug
ge
e
E
EM
M
I
IN
NS
ST
TA
AL
LL
LA
AT
TI
IO
ON
N
&
&
O
OP
PE
ER
RA
AT
TI
IO
ON
N
D
Do
oc
cu
um
me
en
nt
t
V
Ve
er
rs
si
io
on
n
1
1.
.5
5

____________________________________________________________________________________________
Page 2/55 UltraGauge™ EM User Manual www.ultra-gauge.com
W
WA
AR
RN
NI
IN
NG
GS
S
Information in this document is subject to change without notice. Ultra-Gauge.com reserves the right to change or improve its products
and to make changes in the content without obligation to notify any person or organization of such changes, additions or improvements.
Always visit Ultra-Gauge.com for the latest updates concerning the installation, use and operation of this product.
Failure to avoid the following potentially hazardous situations can result in an accident or
collision resulting in death or serious injury
I
IN
NS
ST
TA
AL
LL
LA
AT
TI
IO
ON
N
W
WA
AR
RN
NI
IN
NG
GS
S
When installing UltraGauge in your vehicle, place UltraGauge so that it does not obstruct the driver’s view of the road or ability
to operate the vehicle.
Extreme care must be taken when routing the OBD II cable. Avoid routing and installing in such a fashion that the cable can
interfere with any of the foot controls, steering wheel, or other vehicle controls, or represent an entry or exit hazard to the driver.
Always secure excess or loose cable so that feet and hands do no become entangled.
The windshield mount or Velcro mount may not stay attached under all conditions. Do not mount UltraGauge where it will
become a distraction or hazard should it become detached.
Do not mount UltraGauge in an area that may interfere with the deployment of airbags. Consult your vehicles owner’s manual.
UltraGauge in rare circumstances may impair select vehicle systems. See the Forced Protocol section for more information and
resolution.
The optional locking ring supplied with the windshield mount should normally not be used and is only for the very rare case that
the ball swivel is not tight enough to hold the position of UltraGauge. Use of the ring will result in increased force necessary to
adjust the position of UltraGauge and if improperly used may result in damage. If used, it should be adjusted so that the balls
swivel offers a very slight resistance to movement.
O
OP
PE
ER
RA
AT
TI
IO
ON
N
W
WA
AR
RN
NI
IN
NG
GS
S
Never attempt to operate UltraGauge controls while the vehicle is moving. Not only is this extremely hazardous, UltraGauge
stops performing mileage, distance and other calculations while the menu system is active.
Never become distracted by UltraGauge while driving.
L
Li
ia
ab
bi
il
li
it
ty
y
The use of UltraGauge is at your own risk. Ultra-Gauge.com shall in no event be liable for any damages, whether direct or indirect,
special or general, consequential or incidental, arising from any loss claimed as a result of the use of UltraGauge.
B
Ba
at
tt
te
er
ry
y
W
Wa
ar
rn
ni
in
ng
g
This product contains no batteries
F
Fu
us
se
e
W
Wa
ar
rn
ni
in
ng
g
This product is equipped with a fuse. The fuse is integrated in the male OBD-II connector and cannot be accessed or replaced.
This fuse provides protection against potential short-circuit conditions within UltraGauge and short-circuits introduced into the
cable.
!
!
WARNING
!
!

____________________________________________________________________________________________
Page 3/55 UltraGauge™ EM User Manual www.ultra-gauge.com
NOTICES
NOTICES
W
Wi
in
nd
ds
sh
hi
ie
el
ld
d
M
Mo
ou
un
nt
ti
in
ng
g
L
Le
eg
ga
al
l
N
No
ot
ti
ic
ce
e
Some State laws and ordinances prohibit mounting devices to the windshield or any areas that obstruct visibility. It is the user’s
responsibility to check state and local laws and ordinances before mounting UltraGauge to insure compliance with all applicable laws and
ordinances. Where the windshield mount is prohibited, the Velcro mount can be used to mount UltraGauge in an area compliant with
applicable laws and ordinances.
F
FC
CC
C
C
Co
om
mp
pl
li
ia
an
nc
ce
e
This device complies with part 15 of the FCC rules
R
Ri
ig
gh
ht
ts
s
a
an
nd
d
O
Ob
bl
li
ig
ga
at
ti
io
on
ns
s
The software contained in UltraGauge may not be copied, transferred or disassembled and used in part or in whole. The artwork used in
the generation of UltraGauge electrical circuitry may not be replicated in part or in whole without express written permission from Ultra-
Gauge.com, Inc.
L
Li
im
mi
it
te
ed
d
W
Wa
ar
rr
ra
an
nt
ty
y
UltraGauge is warranted to be free from defects in materials and workmanship for one year and the windshield mount for 6 months from
the date of purchase. Within this period, Ultra-Gauge.com will, at its sole option, repair or replace any components that fail in normal
use. Such repairs or replacement will be made at no charge to the customer for parts and labor, provided that the customer shall be
responsible for transportation costs. This warranty does not apply to the following:
Cosmetic damage, such as scratches, cracks, nicks and dents
Damaged resulting from an impact or fall
Damage to the OBD II cable such as cuts, slices, or crushed areas.
Damage caused by accident, misuse, abuse, water, flood, fire or acts of nature
Damage resulting from exceeding the temperature limits of -20F to 160F. Do not leave UltraGauge unattended and exposed to
extreme dash temperatures on hot days. Remove UltraGauge from the dash when leaving the vehicle or use a sunshade
protector.
Damaged caused by attempted service by an unauthorized person
Damaged caused by disassembly
Damaged caused by modifications
Damage caused by attachment to a vehicle not OBD-II compliant
Damage from reverse polarity battery, battery charger, jumper cables, etc.
Damage to the windshield mount caused by forcing the locking arm
Damage to the windshield mounting bracket or UltraGauge caused by attempting to adjust the windshield mount’s flexible neck
by grasping UltraGauge or the mounting bracket, rather than the neck itself
Damage to the windshield mount bracket or Ultragauge as a result of using the optional locking ring. The optional locking ring
supplied with the windshield mount should normally not be used and is only for the very rare case that the ball swivel is not
tight enough to hold the position of UltraGauge. Use of the ring will result in increased force necessary to adjust the position of
UltraGauge and if improperly used may result in damage. If used, it should be adjusted so that the balls swivel offers a very
slight resistance to movement.
This product is intended as a supplement to existing vehicle gauges and should not be used in a capacity for which it was not intended.
Ultra-Gauge.com makes no warranty to the accuracy of gauges.
Repairs have a 90-day warranty. The resulting warranty is either the remainder of the original limited 1-year warranty or 90-days,
whichever is greater.
Ultra-Gauge.com retains the right to repair or replace, with a new or refurbished product, or offer a full refund.
To request warranty service, please create a support ticket here: http://ultra-gauge.com/customer_support

____________________________________________________________________________________________
Page 4/55 UltraGauge™ EM User Manual www.ultra-gauge.com
U
Ul
lt
tr
ra
aG
Ga
au
ug
ge
e™
™
T
Ta
ab
bl
le
e
o
of
f
C
Co
on
nt
te
en
nt
ts
s
WARNINGS............................................................................................................................................................... 2WARNINGS
INSTALLATION
WARNINGS............................................................................................................................ 2INSTALLATION WARNINGS
OPERATION
WARNINGS ................................................................................................................................... 2OPERATION WARNINGS
Liability................................................................................................................................................................... 2Liability
Battery
Warning...................................................................................................................................................... 2Battery Warning
Fuse
Warning.......................................................................................................................................................... 2Fuse Warning
NOTICES.................................................................................................................................................................... 3
Windshield
Mounting
Legal
Notice
e........................................................................................................................ 3Windshield Mounting Legal Notic
FCC
Compliance..................................................................................................................................................... 3FCC Compliance
Rights
and
Obligations............................................................................................................................................ 3Rights and Obligations
Limited
Warranty.................................................................................................................................................... 3Limited Warranty
Box
Contents............................................................................................................................................................... 8Box Contents
UltraGauge™
EM
Features ........................................................................................................................................ 8UltraGauge™ EM Features
Installation
n................................................................................................................................................................... 9Installatio
Detailed
Installation
instructions ............................................................................................................................ 9Detailed Installation instructions
Velcro.................................................................................................................................................................. 9Velcro
Windshield
Mount............................................................................................................................................. 10Windshield Mount
Start-up
&
Configuration.......................................................................................................................................... 12Start-up & Configuration
Other
Setup
Considerations.............................................................................................................................. 13Other Setup Considerations
OPERATION............................................................................................................................................................. 15OPERATION
INDICATORS ...................................................................................................................................................... 15INDICATORS
HEALTH
INDICATOR...................................................................................................................................... 15HEALTH INDICATOR
LOOP
INDICATOR.......................................................................................................................................... 15LOOP INDICATOR
Light
Sensor.......................................................................................................................................................... 15Light Sensor
CONTROLS ......................................................................................................................................................... 15CONTROLS
GAUGE
PAGES
&
ZONES................................................................................................................................. 16GAUGE PAGES & ZONES
PAGES.............................................................................................................................................................. 16PAGES
PAGES.............................................................................................................................................................. 17PAGES
GAUGE
ZONE
ASSIGNMENT.......................................................................................................................... 17GAUGE ZONE ASSIGNMENT
GAUGES................................................................................................................................................................... 18GAUGES
% Engine Load.................................................................................................................................................. 19
Engine Coolant Temperature ............................................................................................................................ 19
Fuel Trim .......................................................................................................................................................... 19
Fuel Pressure..................................................................................................................................................... 20
Intake Pressure (MAP)...................................................................................................................................... 20
RPM .................................................................................................................................................................. 20
MPH / KPH....................................................................................................................................................... 20
Ignition Timing Advance.................................................................................................................................. 20
Intake Air Temperature..................................................................................................................................... 20
Mass Airflow 1 ................................................................................................................................................. 20
Throttle Position................................................................................................................................................ 20
O2Sensor Output Voltage................................................................................................................................. 21
Distance with Check Engine Light on .............................................................................................................. 21
Fuel Pressure (Diesel)....................................................................................................................................... 21
Wide O2Sensor Output lamda.......................................................................................................................... 21
EGR Commanded ............................................................................................................................................. 21
EGR Error ......................................................................................................................................................... 22
Evaporative Purge %......................................................................................................................................... 22

____________________________________________________________________________________________
Page 5/55 UltraGauge™ EM User Manual www.ultra-gauge.com
Fuel Level %..................................................................................................................................................... 22
Warm-ups Since Trouble Codes Cleared.......................................................................................................... 22
Distance Since Trouble Codes Cleared............................................................................................................. 22
Evaporative Vapor Pressure.............................................................................................................................. 22
Barometric Pressure.......................................................................................................................................... 22
Catalytic Converter Temperature...................................................................................................................... 22
Battery Voltage ................................................................................................................................................. 23
Load absolute %................................................................................................................................................ 23
AFR Commanded ratio..................................................................................................................................... 23
Relative Throttle Position %............................................................................................................................. 23
Ambient Air Temperature................................................................................................................................. 23
Accelerator Pedal Position................................................................................................................................ 23
Throttle Position Commanded .......................................................................................................................... 23
Mass Air Flow 2................................................................................................................................................ 24
Instantaneous MPG,.......................................................................................................................................... 24
KPL, .................................................................................................................................................................. 24
L/100k............................................................................................................................................................... 24
Average MPG ................................................................................................................................................... 24
Average KPL .................................................................................................................................................... 24
Average L/100k ................................................................................................................................................ 24
Average MPH ................................................................................................................................................... 24
Average KPH.................................................................................................................................................... 24
Fuel Rate ........................................................................................................................................................... 24
Distance............................................................................................................................................................. 24
TRIP GAUGES................................................................................................................................................. 25
Short TRIP GAUGES ....................................................................................................................................... 25
Boost Pressure................................................................................................................................................... 26
Horsepower 1 Kilowatts 1 ................................................................................................................................ 27
Torque 1............................................................................................................................................................ 27
Horsepower 2 Kilowatts 2 ................................................................................................................................ 27
Torque 2............................................................................................................................................................ 27
Fuel Level ......................................................................................................................................................... 28
RUN TIME (General)....................................................................................................................................... 28
Instantaneous Gallons/Hour Liters/Hour .......................................................................................................... 28
Distance To Empty (DTE)................................................................................................................................ 29
Time To Empty (TTE)...................................................................................................................................... 29
Volumetric Efficiency % (MAP vehicles only)................................................................................................ 30
UltraGauge Temperature .................................................................................................................................. 30
Gauge/Page
Menu
.. ................................................................................................................................................. 31Gauge/Page Menu ..
Select
Gauges
....................................................................................................................................................... 31Select Gauges ..
Unassign
All
Gauges
s............................................................................................................................................. 31Unassign All Gauge
Load
Default
Gauges ............................................................................................................................................ 31Load Default Gauges
Page
Settings
............................................................................................................................................................ 32Page Settings ..
Page
Display
Format............................................................................................................................................. 32Page Display Format
Page
Enables......................................................................................................................................................... 32Page Enables
Page
Refresh
Time................................................................................................................................................ 32Page Refresh Time
Auto
Page
Advance
e............................................................................................................................................... 32Auto Page Advanc
Auto
Page
Time .................................................................................................................................................... 32Auto Page Time
FUEL
MENU
........................................................................................................................................................... 33FUEL MENU ..
Partial
Tank
fill
up ................................................................................................................................................ 33Partial Tank fill up

____________________________________________________________________________________________
Page 6/55 UltraGauge™ EM User Manual www.ultra-gauge.com
Empty
Fuel
Tank
k................................................................................................................................................... 33Empty Fuel Tan
Fuel
fill
up............................................................................................................................................................. 33Fuel fill up
Level
Sender
Mode............................................................................................................................................... 33Level Sender Mode
Disabled............................................................................................................................................................ 33
Enabled............................................................................................................................................................. 33
Smart................................................................................................................................................................. 34
Smart
Full
Threshold ............................................................................................................................................ 34Smart Full Threshold
Smart
Low
Threshold ........................................................................................................................................... 35Smart Low Threshold
Estimate
Fuel
Level .............................................................................................................................................. 35Estimate Fuel Level
Vehicle
Setup............................................................................................................................................................. 36Vehicle Setup..
SET
ENGINE
SIZE.............................................................................................................................................. 36SET ENGINE SIZE
SET
FUEL
TANK
SIZE....................................................................................................................................... 36SET FUEL TANK SIZE
Calibration..
............................................................................................................................................................ 36Calibration.
Calibrate MPG/Fuel......................................................................................................................................... 36
Reset MPG/Fuel Cal......................................................................................................................................... 37
Calibrate Distance............................................................................................................................................ 37
VE
Enable
(MAP
only)......................................................................................................................................... 38VE Enable (MAP only)
VE
RPM
(MAP
only) ........................................................................................................................................... 38VE RPM (MAP only)
More
..................................................................................................................................................................... 38More ..
Set
HP1
Max
Torque......................................................................................................................................... 38Set HP1 Max Torque
Set
HP2
Effieciency........................................................................................................................................... 38Set HP2 Effieciency
Force
Protocol....................................................................................................................................................... 39Force Protocol
UltraGauge
Setup..................................................................................................................................................... 40UltraGauge Setup..
Version.................................................................................................................................................................. 40Version
Save
and
Restart.................................................................................................................................................... 40Save and Restart
Restore
ALL
Defaults........................................................................................................................................... 40Restore ALL Defaults
Factory
Test .......................................................................................................................................................... 40Factory Test
Compatibility
.. ..................................................................................................................................................... 40Compatibility ..
Power
on
Detect
mode...................................................................................................................................... 40Power on Detect mode
Power
on
Detect
delay...................................................................................................................................... 41Power on Detect delay
Power
off
Detect
mode...................................................................................................................................... 41Power off Detect mode
Power
off
retries ............................................................................................................................................... 41Power off retries
KWP/9141
Optimize.......................................................................................................................................... 42KWP/9141 Optimize
Force
MPG
Sensor ........................................................................................................................................... 42Force MPG Sensor
Injector
Cutoff....................................................................................................................................................... 43Injector Cutoff
DISPLAY
SETTINGS................................................................................................................................................ 44DISPLAY SETTINGS..
SET
Backlite
Mode............................................................................................................................................... 44SET Backlite Mode
Fixed:................................................................................................................................................................ 44
Automatic:......................................................................................................................................................... 44
Backlite
Min
Brightness ....................................................................................................................................... 44Backlite Min Brightness
Backlite
Max
Brightness....................................................................................................................................... 45Backlite Max Brightness
Ambient
Sensitivity .............................................................................................................................................. 45
Ambient Sensitivity
Adjust
LCD
Contrast ............................................................................................................................................ 45Adjust LCD Contrast
ALARMS.................................................................................................................................................................... 46ALARMS..
Set
Gauge
Alarms
.. .............................................................................................................................................. 46Set Gauge Alarms ..
Alarm
siren
on/off................................................................................................................................................. 46Alarm siren on/off
All
alarms
on/off................................................................................................................................................... 46All alarms on/off
Alarm
siren
freq.................................................................................................................................................... 46Alarm siren freq
Load
Default
Alarms............................................................................................................................................. 47Load Default Alarms
Trouble
Code
Alarm ............................................................................................................................................. 49Trouble Code Alarm

____________________________________________________________________________________________
Page 7/55 UltraGauge™ EM User Manual www.ultra-gauge.com
Pending
TC
Alarm................................................................................................................................................ 49Pending TC Alarm
Trouble
Codes
.......................................................................................................................................................... 50Trouble Codes ..
Clear
Check
Engine .............................................................................................................................................. 50Clear Check Engine
Engine
Trouble
Codes
s........................................................................................................................................... 50Engine Trouble Code
Pending
Codes ...................................................................................................................................................... 50Pending Codes
Miscellaneous ........................................................................................................................................................... 51Miscellaneous
Units
of
Measure................................................................................................................................................... 51Units of Measure
Using
UltraGauge
on
more
than
one
vehicle........................................................................................................ 51Using UltraGauge on more than one vehicle.
Cleaning................................................................................................................................................................ 51Cleaning
Frequently
Asked
Questions................................................................................................................................. 51Frequently Asked Questions
Troubleshooting.................................................................................................................................................... 53Troubleshooting
Specifications........................................................................................................................................................ 54Specifications
Document
Revision
History.................................................................................................................................. 54Document Revision History
OBDII
Compliancy
decals.................................................................................................................................... 55OBDII Compliancy decals

____________________________________________________________________________________________
Page 8/55 UltraGauge™ EM User Manual www.ultra-gauge.com
B
Bo
ox
x
C
Co
on
nt
te
en
nt
ts
s
UltraGauge & OBDII Cable
UltraGauge protective plastic sleeve
Windshield mount and optional locking ring (The ring can be used if the ball swivel is not tight enough)
Windshield bracket – already attached to UltraGauge
Two Velcro Squares. Taped to the inside bottom of the box. Used for optional mounting.
Warning insert with link to Rebate/Website.
U
Ul
lt
tr
ra
aG
Ga
au
ug
ge
e™
™
E
EM
M
F
Fe
ea
at
tu
ur
re
es
s
Supports most 1996 and newer OBDII compliant vehicles***
Up to 76 selectable English Gauges*
Up to 46 selectable Metric Gauges*
Real time and long term mileage gauges
Distance-To-Empty & Time-to-Empty Gauges
Horsepower and torque gauges
7 pages of gauges for as many as 56 quickly accessible gauges
Each gauge page can be individually configured to display 4, 6, or 8 gauges.
Each gauge page can be enabled or disabled
Auto-Page advance, cycles through gauge pages
Each gauge can be assigned to any page and to multiple pages
The rate at which gauges are updated is configurable
Configurable low and high alarms for every gauge
Audible and Visual Alarms
Alarms may be individually suspended.
Displays both current and pending trouble codes
Clear Check Engine Light and Trouble Codes
Current and pending Trouble Code Alarms
Automatic fuel fill-up detection **
Oil change and Service Gauges
Trip and short trip Gauges
Health indicator
Internal Temperature sensor that can be monitored and alarmed
Closed and open loop indicator.
Large LCD Display
Display Brightness adjusts automatically to ambient light
Lightweight easy to route OBD II cable
Compact and easily mounted with Velcro or windshield mount
Low power
Retains configuration and accumulated data across power cycles
Automatically detects and turns off display when vehicle is off****
Comprehensive menu system
*Actual number of gauges supported is vehicle dependent
** Auto Fill-up detection is not available on all vehicles.
*** Some vehicles may not be OBD-II compliant. Compliance is printed on the emission decal typically located in the engine
compartment. See example compliance decals at the end of this document.
**** Display will remain on while in the menu system. Always exit the menu system when the ignition is in the OFF position.

____________________________________________________________________________________________
Page 9/55 UltraGauge™ EM User Manual www.ultra-gauge.com
I
In
ns
st
ta
al
ll
la
at
ti
io
on
n
The Basic installations steps are as follows:
1. Choose method of mounting; Velcro or windshield mount
2. Install the mount (The optional ring cab be used if ball swivel is not tight enough)
3. Attach UltraGauge to the mount
4. Optionally coil extra cable near UltraGauge to allow UltraGauge to be disconnected from mount and conveniently
configured
5. Route the remainder of the cable such that it is tucked away and does not interfere with vehicle controls, such as steering,
wiper control, transmission shifter, turn signal, foot controls, and does not represent a hazard to vehicle entry or exit.
6. Connect the UltraGauge OBD II connector to the OBD II connector on the vehicle
7. Turn the ignition to the RUN position. (The ignition has four positions: OFF, ACC, RUN & START. You do not need to
start the vehicle)
8. UltraGauge will then determine the vehicle’s protocol and discover the available gauges.
D
De
et
ta
ai
il
le
ed
d
I
In
ns
st
ta
al
ll
la
at
ti
io
on
n
i
in
ns
st
tr
ru
uc
ct
ti
io
on
ns
s
1. Choose method for mounting; Velcro or windshield mount. The Velcro mount has the advantage that it can be used to
attach in areas less visible from outside the vehicle, reducing the risk of vandalism and theft. The Velcro mount is also less
likely to loose attachment over time and is inherently less obstructive.
The windshield mount has the advantage that it typically positions UltraGauge in an area that is closer to the view of the
road and hence potentially represents less interruption to driving concentration. The windshield mount can also be attached
to any smooth surface and is therefore not limited to the windshield..
V
Ve
el
lc
cr
ro
o
The Velcro strip is comprised of two parts, a hook half and a loop half. Both the loop and hook halves use an adhesive face.
Either face can be attached to UltraGauge. Adhere the Velcro to UltraGauge according to one of the two diagrams below.
NOTE: Make sure the windshield mount bracket has first been
removed from UltraGauge
OPTION 1:
This is the preferred method providing the most resistant to
rotation. Cut one of the Velcro strips in half. Remove the
protective wax paper from one side of the Velcro. Press
Velcro adhesive face firmly against UltraGauge, as shown.
Avoid blocking the vent holes.
OPTION 2:
Remove the protective wax paper from one side of the each
Velcro Piece. Press each Velcro adhesive face firmly
against UltraGauge at the positions shown. Care should be
taken to avoid blocking the vent holes.
Ensure that the surface to which UltraGauge shall be attached is flat, smooth, clean and dry. Once the Velcro has been
firmly attached to the back face of UltraGauge, remove the remaining protective wax paper from the Velcro. Press
UltraGauge firmly against the desired mounting surface. UltraGauge is now mounted and can be removed and attached
repeatedly to configure as necessary.
It is also possible to place slugs or washer behind the UP, DOWN and MENU keys such that pressing the front of
UltraGauge depresses the switches, thus effectively converting the switches to the front.

____________________________________________________________________________________________
Page 10/55 UltraGauge™ EM User Manual www.ultra-gauge.com
W
Wi
in
nd
ds
sh
hi
ie
el
ld
d
M
Mo
ou
un
nt
t
Before selecting a mounting position, check state and local laws and ordinances to determine permissible mounting
locations. Generally the preferred and optimal location is the left lower corner of the windshield, as this location is the least
obstructive, generally closest to the OBD-II connector of the vehicle, semi-shaded, and is least visible from outside the
vehicle. This location also will not block the use of a windshield sun-shade.
WARNING:Do not leave UltraGauge unattended and exposed to extreme dash temperatures on hot days. Damage to the
LCD can occur. Remove UltraGauge from the dash when leaving the vehicle or use a sunshade protector.
Locking Ring: The locking ring should be adjusted so that the ball moves with minimal resistance. Over tightening the
ring will lock the ball and attempted adjustments to the position of UltraGauge can result in damage.
1. Before attaching the mount to the windshield, mold the neck of the windshield mount as necessary to the slope of your
windshield and for the desired position of UltraGauge.
WARNING !
!
!
!
Never attempt to mold the neck of the windshield mount by grasping the mounting bracket or UltraGauge.
Damage to UltraGauge and/or the mounting bracket may occur, as the neck while flexible is relatively rigid.
Clean the windshield mounting area. This is crucial as any grease, dust, dirt or moisture will ultimately cause the
attachment to fail. Make sure the surface is completely dry before proceeding.
Make sure the Windshield Mount locking arm is fully released. Do not
force the arm. There are two release tabs as shown. Grip the release tabs
with your thumb and index finger, and pull the release tabs in the direction
of the arrows imprinted on the release arm. This will release the locking
arm.
Once released, move the locking arm towards the Windshield Mount’s
neck, as shown, to release the suction cup.
With the Windshield Mount’s release arm fully released, press the silicon
base firmly against the windshield, and press the Windshield mount’s
locking arm. It will “click” as it is pressed.
When it has reached the end of its travel it will become resistant to further
movement. Do not attempt to force the locking arm as only a few “clicks”
are necessary and excess force may damage the mount. The windshield
mount should now be firmly attached to the windshield. If not, it is likely
caused by the silicon base not being placed fully flat against the windshield.
Release the locking arm as described above and repeat.

Attach the mounting bracket adapter to UltraGauge such that the bracket’s
release arm is at the top as shown in this diagram.
Attach the UltraGauge/Bracket assembly to the windshield mount by aligning
the large rectangular opening of the bracket with the matching rectangular structure on the windshield mount. Slide
down to attach. Note that it may be necessary to rotate the windshield mount’s head 180 degrees.
The windshield mount also includes a locking ring which can be optionally added to the swivel ball mount to lock it in
place. In most cases the swivel ball mount is sufficiently rigid.
2. Remove and save the twist tie from
the cable. Now that UltraGauge is
mounted, form an 8” diameter loop
with the OBD-II cable near
UltraGauge. This loop will allow
UltraGauge to be removed from the
mount and configured rather than
attempting to configure UltraGauge
while it is held in the mount.
3. Locate the vehicle’s OBD-II connector. This connector is typically found
above the foot controls and below the steering colum. See the diagram
below. In rare cases, the connector may be found in a similar location on
the passenger side or even in the vehicle’s console. To determine where
the OBD-II connector is located for your vehicle, please use the following
resource: http://obdclearinghouse.com/index.php?body=oemdb
If your vehicle is not listed, check other like model years.
OBD-II
4. Once the OBD-II connector is located, route the OBD-II cable so that it does not block or interfere with foot controls. The
UltraGauge connector is a right-angle connector. This design limits the connector from protruding into the foot controls
area. Tuck the cable into gaps between the dash and surrounding structures. Route the cable under the dash such that it will
not hang down into the foot control area. Care should be taken not to route the cable near moving objects, such as the hood
release, emergency brake, brake release, foot controls and associated mechanisms. If appropriate, use the twist tie to secure
any excess cable.
5. Set the ignition to the RUN position, and plug the cable into the vehicle’s OBD-II connector.
____________________________________________________________________________________________
Page 11/55 UltraGauge™ EM User Manual www.ultra-gauge.com

____________________________________________________________________________________________
Page 12/55 UltraGauge™ EM User Manual www.ultra-gauge.com
Ave
MPH
Fuel
Levl
0.00
DTE
Gen
d
st
I
nst MPG Ave MPG
0.00
0.00
0.00
0.00
0.
0
S
St
ta
ar
rt
t-
-u
up
p
&
&
C
Co
on
nf
fi
ig
gu
ur
ra
at
ti
io
on
n
When UltraGauge is first attached to the vehicle’s OBD-II connector it is immediately powered, as the vehicle’s OBD-II connector is
always powered. Once connected UltraGauge will begin scanning the interface to determine the vehicle’s protocol. The vehicles
ignition must be in the RUN position in order for UltraGauge to communicate with the vehicle’s Electronic Control Module (ECM).
The ignition must remain in the RUN position during both scanning and gauge discover.
*
SCANNING *
UltraGauge
v1.0
The scanning process typically completes in 1 to 6 seconds. As UltraGauge
scans it continues to print asterisks to the screen. If after 12 seconds
UltraGauge has not found the protocol in use, it is likely that the ignition is not
in the RUN position. If UltraGauge fails to detect the vehicle’s computer and
protocol, UltraGauge will enter a low power mode after 2 minutes. In this
mode the Backlight is turned off. UltraGauge will stay in this mode until
either the UP or DOWN key is pressed.
29-bit CAN Found
UltraGauge
v1.0
When UltraGauge successfully determines the vehicle’s protocol, it replaces
“SCANNING” with the identified protocol. The possible Protocols are:
Protocol Manufacturer
J1850 VPM GM & Chrysler
FORD Early Ford
9141 Chrysler & Foreign
KWP 2000 Rare, various
11-bit CAN Most 2008 and newer
29-bit CAN Most 2008 & newer Honda, Volvo
Gauges: 31/54
Discovering Gauges
29-bit CAN Found
v1.0
UltraGauge
Once the protocol is identified, UltraGauge will remember the protocol and
should UltraGauge become unplugged, it will try this protocol first.
UltraGauge will then begin the process of discovering the gauges supported by
the vehicle. Again, the ignition must remain in the RUN position during
discovery, otherwise UltraGauge will print “Comm Lost, restarting”.
Once complete, the number of discovered gauges and the total including m
gauges is briefly displayed at the bottom of the screen. If “Comm Lost,
restarting” persists, please see the
etric
Enhanced and Safe mode Gauge Discovery
section.
0.1
(Liters)
S
ET ENGINE SIZE
If UltraGauge has yet to be configured, you will be prompted for your v
engine and fuel tank size. Use the UP/DOWN keys to set the engine and tank
size. Press MENU to store each value.
ehicle’s
Once the engine and tank size are entered, a warning screen is presented.
** WARNING **
Never use the Menu
while operating
the vehicle
Injury or Death
may occur
Press enter to continue
UltraGauge is now up and running
Pressing DOWN, advances the screen to the next page of gauges.
By default, several gauges are preselected. Alternate gauges can be selected via
the menu system. The available gauges are described in the GAUGES section.

____________________________________________________________________________________________
Page 13/55 UltraGauge™ EM User Manual www.ultra-gauge.com
O
Ot
th
he
er
r
S
Se
et
tu
up
p
C
Co
on
ns
si
id
de
er
ra
at
ti
io
on
ns
s
UltraGauge is pre-configured for the most compatible configuration. However, there are various implementations of the OBDII standard
that may require special configuration. The following suggests configuration settings that may be necessary depending upon your vehicle
as well as other configuration setting you should be aware of.
English versus Metric Units
There is no setting to switch between English and Metric units. UltraGauge supports both simultaneously. This allows either or both to
be displayed. For example, if you wish to display KPH and MPH, simply select KPH and MPH from the gauge selection menu and
assign them to positions on the display. By default, UltraGauge is shipped with a pre-selection of English gauges. Use the gauge
selection menu to select the desired gauges with the desired units.
Ignition on Detection
There are two “ignition on” detection modes. When the ignition is switched to OFF, UltraGauge enters a low power mode where the
display is powered off. When the ignition is switched from OFF to RUN, UltraGauge will detect this in 1-6 seconds and power back on.
If UltraGauge fails to power back on, please see the Power
on
Detect
mode
Power on Detect mode in the “UltraGauge setup..” section.
Ignition off Detection
If after the vehicle’s ignition switch is set to OFF, UltraGauge remains on, please see the
P
Po
ow
we
er
r
o
of
ff
f
D
De
et
te
ec
ct
t
m
mo
od
de
ein the “U
Ul
lt
tr
ra
aG
Ga
au
ug
ge
e
S
Se
et
tu
up
p.
..
.section.
Mileage Gauges
During the scanning and gauge discovery process, UltraGauge determines the most accurate means to calculate fuel usage based upon the
various sensors available in the vehicle. Normally no intervention or configuration is necessary. However, in rare cases, some vehicles
may mis-report the presence of a particular sensor which UltraGauge will then attempt to use to calculate the various mileage gauges,
such as Instantaneous MPG, Average MPG, Gallons/Hour, etc. When this issue is present, many of the mileage gauges will display
“Err”. Other gauges such as engine temperature, RPM, MPH, etc., will display correctly This is common on many large Diesel Ford
trucks. If seen, please see this section for more information: Force
MPG
Sensor
Force MPG Sensor
Impaired or odd behavior of vehicle systems
If after installing UltraGauge your vehicle is experiencing odd behavior, such as various dash lights have become lit, factory gauges stop
working, vehicle fails to shift, hard shifting, etc. Please see the following section: Force
Protocol
Force Protocol
MPG Accuracy
For best results, UltraGauge should be calibrated for both distance measurements and fuel measurement. See the following section:
Calibration
Calibration..
.. Vehicles which use a Manifold Absolute Pressure (MAP) sensor instead of a Mass Air Flow (MAF) sensor should also
see the following section: VE
Enable
(MAP
only)
VE Enable (MAP only)and VE
RPM
(MAP
only)
VE RPM (MAP only).
To determine which sensor your vehicle uses see this section: Version
Version.
Alarms
Certain Alarms come pre-enabled while others are disabled. Please see these sections for customizing alarms: ALARMS..
ALARMS.. and
Trouble Code Alarm.
KWP/9141 Optimization
The rate at which the display updates for vehicles with the KWP2000 or 9141 protocol may be slower than desired. There is a
configuration setting which may allow the rate to be increased. See the following setting: KWP/9141
Optimize
KWP/9141 Optimize
Enhanced and Safe mode Gauge Discovery
When UltraGauge is connected to the OBDII connector it begins scanning for the protocol supported. Once found UltraGauge then
discovers the available gauges. There are two discovery modes; Enhanced & Safe. By default Enhanced is selected and recommended.
If during the discovery process, with the ignition in the RUN position, the message “Comm lost, Restarting” is displayed, then press
DOWN when prompted to enter Safe mode. UltraGauge will remember the mode selected. Once in Safe mode, the prompt will change
and pressing DOWN will return to Enhanced mode.

____________________________________________________________________________________________
Page 14/55 UltraGauge™ EM User Manual www.ultra-gauge.com
Injector Cutoff Detection
During de-acceleration, many vehicle manufacturers will turn off the fuel injectors to save fuel. UltraGauge can detect this and factor it
into the fuel usage calculations. Depending on your driving conditions, this may or may not have a significant affect on mileage results.
By default this feature is disabled. See the Injector
Cutoff
Injector Cutoff section for more information.
Use in Multiple Vehicles
UltraGauge can be moved from vehicle to vehicle. UltraGauge will scan and detect the protocol of the target vehicle automatically.
However, UltraGauge accumulates distance and fuel usage data. When moved to another vehicle the accumulated data will need to be
reset. Also, any unique configuration and calibration may need adjustment. For these reasons, its better to leave UltraGauge in one
vehicle.
If you wish to move UltraGauge to another vehicle to use the trouble code functions, this can be done with no regard to configuration or
calibration. The only exceptions are if force protocol has been set or 9141 optimization has been executed. These configuration items
will need to be reset prior to moving to a different vehicle.
If you do wish to move to a new vehicle, reset the device using the restore defaults command:
Menu UltraGauge Setup … Restore ALL defaults.
This command will fully restore the device back to factory settings.

____________________________________________________________________________________________
Page 15/55 UltraGauge™ EM User Manual www.ultra-gauge.com
O
OP
PE
ER
RA
AT
TI
IO
ON
N
Once operating, UltraGauge is automatic. NEVER use the menu system while driving. Not only is this hazardous, UltraGauge stops
performing all mileage, distance, and other calculations while the menu system is active. Always ensure the engine is not running, but
the ignition is in the RUN position, before using the menu system. Normally UltraGauge detects and automatically turns off the display
when the ignition is in the OFF position. However, this feature is not active while using the menu system. Always exit the menu when
the ignition is off otherwise the display and backlight will remain on, and may drain the battery if left in this state for many days.
I
IN
ND
DI
IC
CA
AT
TO
OR
RS
S
While configured to display 4 or 6 gauges per page, two indicators are displayed.
Open/Closed
H
HE
EA
AL
LT
TH
H
I
IN
ND
DI
IC
CA
AT
TO
OR
R
The Health indicator is a heart that beats roughly every second. As
long as the heart continues to beat, UltraGauge is functioning
normally.
L
LO
OO
OP
P
I
IN
ND
DI
IC
CA
AT
TO
OR
R
he
The Open/Closed loop indicator provides a visual indication of the
state of the vehicle’s fuel mixture control system. Closed loop is t
desired and nominal condition, and indicates that the vehicle’s
Engine Control Module (ECM) is using the vehicle’s Oxygen and
other sensors to set the real time fuel mixture.
An open loop will normally occur when the vehicle is cold, or when
the throttle is wide open, or when the engine is being used to decelerate the vehicle. If the loop remains open this indicates that
there is a problem with the overall fuel mixture system and the ECM is no longer able to determine the correct fuel mixture. In
this situation the ECM uses a static table to approximate the fuel mixture. In this state the fuel mixture will likely be too rich or
too lean. Continued open loop operation will likely result in a Trouble code. This indicator is not present on most Diesels.
L
Li
ig
gh
ht
t
S
Se
en
ns
so
or
r
UltraGauge features a light sensor that is used to optionally automatically adjust the brightness of the display. During the day, the
display backlight will automatically adjust to maximum brightness, and to minimum brightness for night driving. It is important that the
light sensor window is not blocked as a result of installation. The Light Sensor Port is located on the front right side of UltraGauge, as
shown above. The backlighting function is fully configurable. See the Backlighting section for additional details.
C
CO
ON
NT
TR
RO
OL
LS
S
There are three controls used to setup, configure and control UltraGauge. The controls consist of the following three input keys which
are located on the back of UltraGauge. KEY Function in Menu Alternate Function
MENU
SELECT
Used to enter the Menu.
It is also used to indicate a
selection.
None
UP
Moves the cursor upward or
increases the value of an
entry.
From the main gauge screen, pressing and
holding UP for three seconds triggers a
Tank Fill Up.
When in low-power mode, pressing UP,
exits low power mode.
DOWN
Moves the cursor
downward or decreases the
value of an entry.
Two Alternate functions:
From the main gauge screen, pressing
DOWN will advance to the next page of
gauges.
During an Alarm, pressing Down will
suspend the alarm.
To make configuration changes, hold UltraGauge with the display towards you and manipulate the keys from behind using two hands.
Once you get the hang of it, it will be obvious.
When entering values, holding the UP or DOWN key pressed will cause the value to advance faster.
The Sound port is used to provide audible tones while accessing the menu system and for alarms.
Ave
MPH
Fuel
Levl
0.00
DTE
Gen
d
st
I
nst MPG Ave MPG
0.00
0.00
0.00
0.00
0.
0
Loop Indicator
Health Indicator
Light Sensor

____________________________________________________________________________________________
Page 16/55 UltraGauge™ EM User Manual www.ultra-gauge.com
G
GA
AU
UG
GE
E
P
PA
AG
GE
ES
S
&
&
Z
ZO
ON
NE
ES
S
UltraGauge can display seven separate pages of gauges. Each page can independently be configured to display 4, 6 or 8 gauges. Gauges
are displayed by assigning a gauge to a particular zone. Zones are identified by a number 1 through 8. Assigning a gauge to zone “1”,
places the Gauge in the upper left hand corner, as shown below. Likewise, a gauge assigned to Zone “6”, places the gauge in the lower
right hand corner. Zones that are unused on a page are ignored, but still may be assigned should you wish to switch between 4, 6 or 8
gauges per page.
During normal operation, to advance to the next page of gauges press and hold the DOWN arrow key for 1 second. UltraGauge will emit
a tone when the page advance is recognized. Pressing DOWN on the last enabled page returns the display to page 1.
1 2
3
54
6
Page 1
5 6
7 8
Page 7
1 2
Page 2
Press
DOWN
Press
DOWN
Press
DOWN
Gauge Zone
Ordering
3 4
3
1 4
2
8 gauges
Per page
4 gauges
Per page
6 gauges
Per page
…

____________________________________________________________________________________________
Page 17/55 UltraGauge™ EM User Manual www.ultra-gauge.com
P
PA
AG
GE
ES
S
Each of the seven pages can individually be enabled or disabled.
MENU Gauge/Page Menu ..
Select Gauge/Page .. Page settings ..
Page Enables
A disabled page will be skipped when the page is manually or auto advanced.
Each page can be configured to display 4, 6 or 8 Gauges.
MENU Gauge/Page Menu ..
Select Gauge/Page .. Page settings ..
Page Display Format
Any gauge can be assigned to any zone on any page. A gauge can be assigned to one or all pages. For example, RPM could be
assigned to zone 1 on all seven pages. A gauge can only be assigned once on any given page.
If enabled, the auto page advance feature will cycle through each enabled page.
MENU Gauge/Page Menu ..
Select Gauge/Page .. Page settings ..
Auto Page Advance
Pressing the “DOWN” key while auto-page is enabled, will cause the auto page feature to pause at the current page. Pressing
“DOWN” again will resume auto-page advance
The duration that a given page is displayed is configurable from 1-255 seconds. Each page can have a unique duration if
desired.
MENU Gauge/Page Menu ..
Select Gauge/Page .. Page settings ..
Auto Page Time
The Rate at which gauges are updated is configurable from 0.3 seconds to 2 seconds.
MENU Gauge/Page Menu ..
Select Gauge/Page .. Page settings ..
Page Refresh Time
The set Refresh time applies to every page. This setting also affects the rate at which the Heart Beat indicator beats. Lowering
the refresh time, increases the heart beat rate and the rate at which gauges are updated. This setting is intended for vehicles with
the CAN protocol and is not recommended for KWP and 9141 protocols.
G
GA
AU
UG
GE
E
Z
ZO
ON
NE
E
A
AS
SS
SI
IG
GN
NM
ME
EN
NT
T
To assign a gauge to a page and zone:
1. select MENU Gauge/Page Menu ..
Select Gauge/Page .. Select Gauges
Select Page n Gauges
2. Use the UP & DOWN keys to Navigate to the desired Gauge. Press Next or Back to advance to the next group of gauges
3. While the cursor is positioned next to the desired gauge, Press MENU. This will cause the cursor to blink.
4. Pressing UP or DOWN will cause the Cursor to change to a number corresponding to Zones 1-8. You may also continue to
hold UP or DOWN and the zones will advance automatically.
5. When the desired Zone is displayed, Press MENU to assign the Gauge to that Zone. Once assigned the cursor will stop
blinking.
6. Repeat the operation for each desired Gauge.
vZone BACK NEXT
% Engine Load
1 Coolant Temp
Intake Pressure
RPM
MPH
Timing Advance
2 Intake Air Temp
Once a gauge has been assigned to a zone, it is saved. The UltraGauge configuration is stored in non-volatile memory so that it is
preserved through car start/stop cycles or when the unit is unplugged. The configuration remains until changed.
All the gauges can be unassigned, with the menu item:
MENU
Gauge/Page Menu ..
Select Gauge/Page ..
Unassign All Gauges.
Once unassigned the Main Gauge screen will show no gauges, and will only show the loop indicator and heartbeat and the text: “No
Gauges Selected”. This will be true for each gauge page set to display 4 or 6 gauges. This will also be true on a gauge page basis if all
the zones of a page are unassigned manually as part of the gauge zone assignment process.

____________________________________________________________________________________________
Page 18/55 UltraGauge™ EM User Manual www.ultra-gauge.com
G
GA
AU
UG
GE
ES
S
The total potential available gauges is summarized in Table 1 - Potential Available Gauges. The actual gauges available is always
vehicle dependent. Once the initial gauge discovery process is complete, the number of available gauges and the number including
metric will be displayed; Gauges/Metric. To determine which specific gauges are available, select:
MENU Gauge/Page Menu .. Select Gauges..
Select Page n Gauges
In general vehicle manufacturers are federally required to report gauges that are specifically used in the determination of the fuel mixture
for emissions purposes. Typically older vehicles provide a minimum of gauges while many newer vehicles support nearly all gauges.
Table 1 - Potential Available Gauges
English Gauge Metric Gauge English Gauge Metric Gauge
% Engine Load Boost Pressure, Relative Pressure
(PSI) Boost Pressure, Relative
Pressure (kPa)
Engine Coolant Temperature (ºF) Engine Coolant Temperature (ºC) Brake Horsepower 1 Brake Kilowatts 1
Short Term Fuel Trim Bank 1 Torque 1 (ft lbs) Torque 1 (N.m)
Long Term Fuel Trim Bank 1 Brake Horsepower 2 Brake Kilowatts 2
Short Term Fuel Trim Bank 2 Torque 2 (ft lbs) Torque 2 (N.m)
Long Term Fuel Trim Bank 2 Mass Air Flow Sensor 2 – Calculated
Fuel Pressure (PSI) Fuel Pressure (kPa) Instantaneous MPG Instantaneous KPL
Instantaneous L/100Km
Intake Manifold Absolute
Pressure(MAP) (PSI) Intake Manifold Absolute
Pressure(MAP) (kPa) Average MPG – General Average KPL – General
Average L/100Km – General
RPM Average MPH – General Average KPH – General
MPH KPH Average G/H - General Average L/H - General
Timing Advance Run Time – General
Intake Air Temperature (ºF) Intake Air Temperature (ºC) Miles – General Kilometers – General
Mass Air Flow Sensor 1 (g/s) Gallons Used – General Liters Used – General
Absolute Throttle Position 1 %
Bank 1 0xygen Sensor 1 Voltage Instantaneous Gallons/Hour Instantaneous Liters/Hour
Bank 1 0xygen Sensor 2 Voltage Miles to Empty Kilometers to Empty
Bank 2 0xygen Sensor 1 Voltage Fuel Level (gallons) Fuel Level (Liters)
Bank 2 0xygen Sensor 2 Voltage Time to Empty(TTE) (Hours:Mins)
Miles traveled with Check Engine Light
On. Kilometers traveled with Check
Engine Light On. Volumetric Efficiency (MAP vehicles
only)
Fuel Pressure (Diesel) (PSI) Fuel Pressure (Diesel) (10kPa) Average MPH – Trip Average KPH – Trip
Bank 1 Wide 0xygen Sensor 1
Lambda
Average MPG – Trip Average KPL – Trip
Average L/100Km - Trip
Bank 2 Wide 0xygen Sensor 1
Lambda
Gallons Used – Trip Liters Used - trip
EGR Flow % Average Gallons/Hour – trip Average Liters/Hour – trip
EGR Flow % Error Run Time – Trip (Hours:Minutes)
Evaporative Purge % Miles –Trip Kilometers - Trip
Fuel Level % of full
Number of Warm-ups since Check
Engine Light Cleared
Average MPH – Short Trip Average KPH – Short Trip
Miles traveled since Check Engine
Light Cleared Kilometers traveled since Check
Engine Light Cleared
Average MPG – Short Trip Average KPL – Short Trip
Average L/100Km - Short
Trip
Evaporative Vapor Pressure (PSI) Evaporative Vapor Pressure (Pa) Gallons Used – Short Trip Liters Used - Short Trip
Barometric Pressure – Inches of
Mercury (inHg) Barometric Pressure – Inches of
Mercury (kPa) Average Gallons/Hour – Short Trip Average Liters/Hour – Short
Trip
Catalytic Converter Bank 1 Sensor 1
Temperature (ºF) Catalytic Converter Bank 1 Sensor 1
Temperature (ºC) Run Time – Srt Trip (Hours:Minutes)
Catalytic Converter Bank 2 Sensor 1
Temperature (ºF) Catalytic Converter Bank 2 Sensor 1
Temperature (ºC) Miles – Short Trip Kilometers - Short Trip
Catalytic Converter Bank 1 Sensor 2
Temperature (ºF) Catalytic Converter Bank 1 Sensor 2
Temperature (ºC)
Catalytic Converter Bank 2 Sensor 2
Temperature (ºF) Catalytic Converter Bank 2 Sensor 2
Temperature (ºC) Oil Change Distance (miles) Oil Change Distance (Km)
Battery Voltage Service Distance (miles) Service Distance (Km)
Load absolute %
UltraGauge Internal Temperature (ºF) UltraGauge Internal
Temperature (ºC)
AFR Commanded Ratio
Relative Throttle Position %
Outside Ambient Air Temperature (ºF) Outside Ambient Air Temperature
(ºC)
Absolute Throttle Position 2 %
Accelerator Pedal Position 1 %
Accelerator Pedal Position 2 %
Command Throttle Position %
Gauges in Blue are new for UltraGauge EM

____________________________________________________________________________________________
Page 19/55 UltraGauge™ EM User Manual www.ultra-gauge.com
Gauge name Range Units Abbreviation
% Engine Load 0 to 100 % %Eng load
% Engine Load
Estimated percent of engine load. Where engine load is
calculated as
% Load = (Current Air flow)
(Peak Air Flow)
Or
% Load = (Current Engine Torque)
(Peak Engine Torque)
The method used is vehicle dependent.
Gauge name Range Units Abbreviation
Coolant Temp ºF -40.0 to 419.9 ºF Eng ºF
Coolant Temp ºC -40.0 to 215 ºC Eng ºC
Engine Coolant
Temperature
Derived directly from the engine coolant temperature sensor or a cylinder head
temperature sensor. Diesels may report engine oil temperature instead.
Gauge name Range Units Abbreviation
Shrt fuel trim bank1 Srt tr1
Long fuel trim bank1 Lng tr1
Shrt fuel trim bank2 Srt tr2
Fuel Trim
Long fuel trim bank2
-100% to 99.2%
Percent of
typical
Lng tr2
Fuel trim refers to the fine tune control of fuel delivery and specifically indicates adjustments made dynamically to the base fuel
table to obtain the proper ratio of fuel to air. The fuel-to-air ratio is adjusted by increasing or decreasing the time fuel injectors
are open. Note that fuel injectors are either fully open or fully closed - there is no variable opening.
Fuel trim is generally calculated by using a wide set of data values, including forward O2sensors, intake air
temperature/pressure or air mass sensor, barometric pressure, humidity, engine coolant temp, anti-knock sensors, engine load,
throttle position , and battery voltage.
Short term fuel trim refers to adjustments being made in response to temporary short term conditions.
Long term fuel trim is used to compensate for issues that seem to be present over a much longer period or that are essentially
permanent. Long term fuel trim generally should not exceed +- 10% in most vehicles.
Fuel trims are expressed in percentages with a range of -100% to 99.2% of nominal. Positive values indicate a lean condition
exists and the injector is left open longer to compensate, thus adding more fuel. Negative values indicate a rich condition exists
and the injectors are closed more quickly thus reducing the amount of fuel.
Example: A value of 5.0% indicates that the injector is being left open 5% longer than normal, thus the fuel to air ratio is being
increased.
Fuel trim could more appropriately be called “Injection on-time %”.
Fuel trim banks refer to the cylinder banks in a V style engine. Cylinder #1 is always in bank 1. Even though the engine may
contain two physical banks, only a single bank may be reported by the ECM. UltraGauge displays Fuel Trim Banks One and
Two if reported by the vehicle’s engine computer. For those vehicles with three or four banks, only banks one and two will be
available for display on UltraGauge.
UltraGauge supports the following Fuel Trim Gauges:
Short Term Fuel Trim percentage Bank 1
Short Term Fuel Trim percentage Bank 2
Long Term Fuel Trim percentage Bank 1
Long Term Fuel Trim percentage Bank 2
NOTE: If the engine is operating in Open Loop, the short trim will be reported as 0%.

Gauge name Range Units Abbreviation
Fuel Pressure PSI 0 to 111 PSI Fuel PSI
Fuel Pressure kPa 0 to 765 kPa Fuel kPa
Fuel Pressure
Fuel rail pressure at the engine relative to atmosphere (Gauge pressure)
Gauge name Range Units Abbreviation
Intake Pres abs PSI 0 to 36.98 PSI MAP PSI
Intake Pres abs kPa 0 to 255 kPa MAP kPa
Intake Pressure
(MAP)
Intake Manifold Absolute Pressure (MAP). This is absolute pressure as opposed to being
relative to atmosphere (gauge pressure).
The pressure reported is the pressure above absolute vacuum. When this gauge reports 14.7
PSI, that means the pressure in the manifold is the same as that of outside air (at sea level).
Gauge name Range Units Abbreviation
RPM 0 to 16,384 RPM RPM
Rotations per minute of the engine crankshaft
RPM
Gauge name Range Units Abbreviation
MPH 0 to 158.4 MPH MPH
KPH 0 to 255 KPH KPH
MPH / KPH
Vehicle road speed
Gauge name Range Units Abbreviation
Timing Advance -64 to 63.5 degrees Tmg Adv
Ignition Timing
Advance Ignition timing spark advance in degrees before top dead center for cylinder #1. Does not
include mechanical advance, if any.
Gauge name Range Units Abbreviation
Intake Air Temp ºF -40.0 to 419.9 ºF Intk ºF
Intake Air Temp ºC -40.0 to 215 ºC Intk ºC
Intake Air
Temperature
The temperature of the air in the intake manifold. When the engine is cold, this is equivalent
to outside air temperature
Gauge name Range Units Abbreviation
Mass Air Flow 1 g/s 0 to 655.35 grams/second MA1 g/s
Mass Airflow 1
The Mass Airflow rate of air into the intake manifold. This is the raw un-calibrated sensor
output. The sister gauge, “Mass Airflow 2” is the calibrated or calculated version
Gauge name Range Units Abbreviation
Throttle Position 1 % abs TP1%
Throttle Position 2 % 0 to 100 % abs TP2%
Throttle Position
The percentage that the throttle is open. This is the absolute output from the throttle position
sensor as a percent of the TP Sensor’s max value. The closed and wide open throttle positions
will likely not be equal to 0% and 100% respectively. For example, the physically closed
throttle position may correspond to an absolute position of 8%.
“Throttle Position 2” is for vehicles with a second throttle Position Sensor
____________________________________________________________________________________________
Page 20/55 UltraGauge™ EM User Manual www.ultra-gauge.com
Table of contents
Other UltraGauge Automobile Accessories manuals