AEM 30-3350 Operating and safety instructions

ADVANCED ENGINE MANAGEMENT INC.
2205 126th Street Unit A, Hawthorne, CA. 90250
Phone: [phone] Fax: [phone]
http://www.aemelectronics.com
Instruction Part Number: 10-3350 Rev A
2013 Advanced Engine Management, Inc
Page 1
Multi-Input Water/Methanol
Injection Kit
P/N 30-3350, 30-3351, 30-3352
This product is legal in California for racing vehicles only and should never be used
upon a highway. This product is legal solely for vehicles used in competition which
may never be used upon a public road or highway
WARNING:
!
Improper installation and/or adjustment of this product can result in
major engine/vehicle damage! Use of this injection system requires
proper tuning! Use this system with EXTREME caution! If you are
uncomfortable with anything about this, please refer the installation to
an AEM trained tuning shop or call 800-423-0046 for technical
assistance. You should also visit the AEM Performance Electronics
Forum at http://www.aempower.com
NOTE: AEM holds no responsibility for any engine damage that
results from the misuse of this product!

Page 2
Contents
Introduction...................................................................................................................................3
Specifications ...............................................................................................................................3
Hardware Kit: ............................................................................................................................3
Parts List:..................................................................................................................................3
Injector Nozzle Kit:....................................................................................................................3
Installation ....................................................................................................................................4
Diagram ....................................................................................................................................4
Installation Checklist .................................................................................................................5
Pump and Tank Install ..............................................................................................................6
Controller Install........................................................................................................................7
Progressive Controller Installation.............................................................................................8
External LED Install...................................................................................................................8
External MAP, Injector Duty, MAF overview .............................................................................9
External MAP 0-5V Installation................................................................................................10
Injector Duty Installation..........................................................................................................11
0-5V MAF Installation..............................................................................................................12
Frequency MAF Installation ....................................................................................................13
Pump/Tank Flush....................................................................................................................14
Nozzle Selection and Assembly..............................................................................................14
Nozzle Mounting .....................................................................................................................15
Pump/System Check...............................................................................................................15
Fluid Compatibility...................................................................................................................15
System Errors.............................................................................................................................16
Troubleshooting Diagram........................................................................................................17
Controller....................................................................................................................................18
Settings...................................................................................................................................18
Mode Selection .......................................................................................................................18
Status LED..............................................................................................................................18
Fuse........................................................................................................................................19
“Test” Button ...........................................................................................................................19
Short circuit self-diagnostics ...................................................................................................19
A More Linear Flow Output.........................................................................................................19
Boost-Safe Output (optional) ......................................................................................................20
Solenoid Driver (optional)...........................................................................................................20
Non-Progressive Operation (optional) ........................................................................................20
Engine Tuning ............................................................................................................................20
Important Safety Notice Regarding Methanol.............................................................................21
Cold Weather Operation.............................................................................................................21
Maintenance...............................................................................................................................21
Optional System Upgrades.........................................................................................................22
AEM Electronics warranty...........................................................................................................23

Page 3
Introduction
Congratulations on your purchase of the AEM Water/Methanol Injection Kit. This document will
help guide you through the setup and installation process. Please take the time to review its
contents prior to installation. Pay especially close attention to any bolded text, as it indicates an
important note, or step in the process.
Before beginning installation of electronic components please disconnect the ground side of the
battery. This is for your safety.
Specifications
1 Gallon tank with integral level sensor
200 PSI injection pump
Progressive pump controller with “Boost Safe” feature
High amperage pump driver with over-current, over-voltage and under-voltage protection
Error protection output with over-current, over-voltage and over-temperature protection
Two system status LED indicators; shows pump duty cycle and system errors
Pump open and short detection and indication; works even if the pump is off
Test button that manually triggers pump
Two dial pump speed control
Hardware Kit:
35-4512HW
Quantity
Description
Part #
36 in
3/8" High Temp Wire Wrap
8-169
6 in
Edge Protector
8-111-E
1
1/8” Tee Fitting
35-2147
10
6” Zip Tie
8-113-E
4
Bolt, Hex Head, 5/16-18 x 1.25”
1-2115
4
Bolt, Hex Head, 8-32 x 1.5”
1-2116
8
Screw, Pan Head #8 x 1.0"
1-3048
4
Screw, Pan Head #6 x 0.5"
1-3049
4
Nut, Nylock, 5/16-18
1-3055
4
Nut, Nylock, 8-32
1-2537
12
Washer, #8 x 3/4"
1-3051
4
Washer, #8 x 7/16"
1-3050
4
Washer, 5/16
1-3031-E
4
Washer, Fender, 5/16
1-3054
1
5mm Cockpit LED
35-4505
2
Butt Connector, 14-16 AWG (blue)
8-360
9
Butt Connector, 18-22 AWG (red)
8-361
4
Ring Terminal, 14-16 AWD (blue)
8-354
1
1/4" Hose Routing Strip
35-4500-20
Parts List:
Quantity
Description
Part #
20 ft
High Pressure ¼” Nylon Hose
35-4500-20
1
1 Gallon Tank With Integral Fluid
Level Sensor
10”h x 8.5”w x 4.25”d
35-4542
1
200 PSI Pump With Integral Fittings
5843-2S0D-
B744AM
1
Progressive Injection Module
35-4551
1
12 ft Wiring Harness
35-3451
Injector Nozzle Kit:
35-4546
Quantity
Description
Part #
1
Jet, Medium (500 cc/min)
35-4514-02
1
Jet, Small (250 cc/min)
35-4514-04
1
Jet, Large (1000 cc/min)
35-4514-05
1
Nylon Washer
35-4517
1
Injector Body
35-4515-2
1
H2O Nozzle
35-4545

Page 4
Installation
Diagram
NOTE: THIS KIT INCLUDES NEW STYLE INJECTOR NOZZLES THAT HAVE INTERNAL CHECK
VALVES. AN EXTERNAL CHECK IS NO LONGER NEEDED OR INCLUDED IN THIS KIT.

Page 5
Installation Checklist
The following list of steps is an overview of the installation process. A complete and more
detailed list of each step including optional peripherals is defined later in this document.
□Install Tank
oFasten with 4 of the 8 supplied #8 sheet metal screws along with the 4 large
washers or the 5/16-18 bolts and Nylock nuts.
□Install Pump
oSelect suitable location for pump near and below the lowest fluid level of tank.
oFasten with 4 of the #8 sheet metal screws along with the 4 small washers or the
#8-32 bolts and Nylock nuts.
oCut supplied nylon hose with a sharp razor blade and install from tank to pump.
□Install Controller
oDisconnect ground side of battery during electronic installation.
oFind suitable location for controller inside driver’s compartment.
oFind location in driver’s field of view and install external LED.
oFollow the wire diagram and connect wires from supplied wire harness.
oConnect the blue wire to external input signal
□Flush Tank
oConnect the remainder of hose to pump. (DO NOT CONNECT NOZZLE)
oFill Tank with Water (AEM recommends using Distilled Water).
oTurn on key power to power on controller.
oUse Test button on controller to flush the tank into a separate container.
oDrain tank and proceed to next step.
□Connect Nozzle to System
oSelect nozzle and connect to nylon hose.
oFill tank with Water.
oUse Test button on controller to test complete system.
□System Check
oWhile pushing the Test button ensure that no errors are reported and that the
system is producing a gradually increasing flow out of the nozzle.
oThis may require pressing the Test button multiple times to purge the system.
oDrain tank and fill with desired Water/methanol mixture.
oDO NOT use a hydrocarbon fuel. Water/Methanol are the only supported fluids
□Install Nozzle
oFind a suitable location to install nozzle. Nozzle must be mounted before the
throttle plate. Nozzle should also be mounted after the MAF sensor if present.
Nozzle must also be mounted after any intercoolers.
oInstall nozzle, follow instructions for modifying intake to accept the nozzle.
oCut and install nylon hose from pump to nozzle. Ensure that the hose is not
resting, near, or running on any moving or “hot” parts.
□Tune Engine
oEngine tuning is usually required in order to maximize potential power gain.

Page 6
Pump and Tank Install
Find a suitable location to mount the tank and pump. The tank
should be mounted such that it is below the injection point. The
tank and pump must be mounted in the same area. Pump may be
mounted on exterior of vehicle but should be mounted away
from wheel wells or other areas where it will come into direct
contact with water or road debris. Pump failures that have
clearly been caused by exposure to water/mud/debris will not be
covered under warranty. This includes but is not limited to, the bed
of a truck, and the inside of the fender wells. Find a location where
the pump will remain dry. Use 4 of the 8 supplied #8 sheet metal
screws along with the 4 large washers or the 5/16-18 bolts and Nylock nuts to mount the 1-
gallon tank.
(Optional 5 Gallon Tank Install)
Before mounting the tank, check the area under the desired mounting location for fuel tanks,
fuel lines, or any other obstructions. Mount the tank in an upright level position as shown below.
Mark the four mounting points and drill with a 3/8” bit. Use the supplied 5/16-18 bolts, nuts, and
large OD flat washers for mounting the tank into your vehicle. IMPORTANT: Use the supplied
large OD washer to spread the load on the plastic mounting ears of the tank. DO NOT
OVERTIGHTEN! Nuts should just be snug; they are locking nuts and will not loosen. Over-
tightening will crack the plastic and cause leaks and void the warranty.
Note: All tanks are tested for leaks during assembly. A special
sealant adhesive is used to bond the plastic tank to the metal
fitting. DO NOT attempt to tighten the fitting any further!
The pump must be located in the same area as the tank and should be mounted at or below the
lowest fluid level height.

Page 7
Take note of the direction of flow, indicated by the arrows on the pump body, when mounting the
pump.
Use four #8 sheet metal screws along with the 4 small washers or the #8-32 bolts and nylock
nuts to mount the pump. The pump can be mounted in any position horizontally or vertically.
Once the tank and pump are mounted, cut the appropriate length of tubing needed to connect
the outlet fitting on the tank to the inlet fitting on the pump. Make sure there are no sharp bends
in the tubing. Cut the tubing to length with a clean perpendicular slice using a sharp razor
blade, making sure the ends are clean and square. Push in the hose at the tank and pump to
install. Make sure they are pushed in all the way and check with a light tug on the hose. Secure
the hose to the chassis using sections of the supplied hose routing strip or with zip-ties.
Controller Install
The progressive controller is NOT waterproof and should NOT be mounted in the engine bay!
Find a convenient location for the controller inside the driver’s compartment. The adjustment
knobs should remain in an accessible location but still remain protected from possible water
incursion. If you need to extend the wires to mount the controller use at least 16 AWG wire for
the pump and controller ground circuits and 18 AWG for the remainder. The controller contains
an externally accessible fuse, no additional fuses are required. Use the supplied zip-ties to
mount the controller.

Page 8
Progressive Controller Installation
Pin #
Description
Wire**
Color
Connection
1
Pump Ground
16
AWG
Orange
Connect to ground (black) wire of pump.
2
LED -
20
AWG
Gray
Connect to ground (black) wire of external LED.
3
LED +
20
AWG
Violet
Connect to positive (red) wire of external LED.
4
Solenoid -
20
AWG
Brown/White
1.5A Low Side output. Connect to optional flow control
solenoid.
5
Boost Safe LS
Out
18
AWG
Green
1.7A Low Side output. Grounded when error condition
exists.
6
Pump Power
16
AWG
Pink
Connect to the positive (red) wire of pump.
7
Ground
16
AWG
Black
Main ground connection, connect directly to battery
ground.
8
Level Switch+
20
AWG
White
Connect to the white wire of the fluid tank level sensor*
9
Level Switch-
20
AWG
Brown
Connect to the black wire of the fluid tank level sensor*
10
Arm Switch +
20
AWG
Yellow
Arms injection system. Connect to a switched 12V
source.
11
External Signal
18
AWG
Blue
Connect to External Signal. (0-5V, injector duty, MAF
frequency)
12
Power 12V
16
AWG
Red
Main Power Connection, connect directly to positive
battery terminal.
*Note: If fluid tank is equipped with previous generation level sensor, identified by having two black wires, then
pins 8 (white) and 9 (brown) may be connected to either of the two black sensor wires. The polarity is
unimportant.
**Note: If you need to extend the wires to mount the controller use at least 16 AWG wire for the pump and
controller ground circuits and 18 AWG for the remainder.
External LED Install
Find a suitable location in the driver’s line of sight to mount the external LED. Mount the LED
and run the wires to the controller. The LED indicates the operation of the controller. If the
pump is off and there are no errors the LED will be off. If there are no errors and the pump is on
the LED intensity will vary with the pump speed. If there are any errors they will be indicated by
flashing the LED.

Page 9
External MAP, Injector Duty, MAF overview
The connection of the External MAP/MAF pin will depend on the desired mode of operation.
Please follow the table in determining where to connect this wire.
Mode of operation
Dip Switch Settings
Pin Installation location
MAF / MAP (0V-5V)
ON –ON –ON
*Connect to signal output from MAF/MAP where signal
range is 0V-5V.
Injector Duty (0%-100%)
OFF –OFF –ON
*Connect to the injector duty signal that is active low. Multi-
Pulse Injection, as is found on some diesel applications, is
NOT supported. Please verify a single pulse for each
injection event with an oscilloscope prior to operation.
Frequency MAF
(40Hz - 220Hz)
OFF –ON –OFF
*Connect to the frequency MAF signal.
Frequency MAF
(400Hz –2200Hz)
OFF –ON –ON
*Connect to the frequency MAF signal.
Frequency MAF
(2kHz –14kHz)
ON –OFF –OFF
*Connect to the frequency MAF signal.
*Please consult the factory service manual to find the appropriate wire to tap for the above connections. It is
acceptable to make this tap close to the sensor/injector or nearer to the ECU itself; whichever is more convenient.

Page 10
External MAP 0-5V Installation
Operation:
The 0 –5 Volt external MAP mode is designed for vehicles running high boost, beyond that of
the Internal and HD models, or for users who already have a sensor or output of their MAP with
a range of 0 –5 Volts. See Table 1 for compatible AEM MAP sensors.
Dip Switch Settings:
ON –ON –ON
Setup, Connection:
To setup your system for external MAP you must first find the correct source to connect to. In
order to locate the correct signal the use of a volt meter will be required. Once you have located
your MAP sensor you can begin to check the wires for the “signal” wire. The signal wire should
remain at or near 0 Volts when the car is turned off or is not running. Once the vehicle is started
it should continue to remain at or near 0, however it may begin oscillate up and down slightly. To
determine if you do in fact have the correct wire you can try and rev the engine while monitoring
the voltage. You should observe the signal rising and falling with engine speed. Please note
that you may need to rev the engine high enough to put it into boost. Once you have found the
correct signal wire you may tap onto it (if it is used by other devices), or connect it directly to the
Water Methanol controller (Pin #11 –Blue).
Testing:
To test your setup it is recommended you finish the installation, but before installing the nozzle
you run the engine and ensure the system is operating as expected. That is when the engine is
running and the MAP sensor is outputting in a range set by the controller you will get flow. You
want to ensure you are not getting flow when the engine is turned off or is not expected. This
could be due to improper wiring or the incorrect mode selected.
Pressure Range
AEM Brass Sensor Kit
P/N
AEM Stainless Steel
Sensor Kit P/N
1 Bar / 15PSIa
30-2131-15G
30-2130-15
2 Bar / 30 PSIa
30-2131-30
30-2130-30
3.5 Bar / 50 PSIa
30-2131-50
30-2130-50
5 Bar / 75 PSIa
30-2131-75
30-2130-75
100 PSIg
30-2131-100
30-2130-100
Table 1 –Compatible AEM Pressure Sensor Kits

Page 11
Injector Duty Installation
Operation:
The Injector Duty mode is designed for vehicles where water methanol injection rate is desired
to be highly coupled to the injector duty, meaning the more fuel the more water methanol. This
mode can be used when MAF is not available, or in NA vehicles. Injector duty is NOT intended
to work with diesel or other multi-pulse injection systems.
Dip Switch Settings:
OFF –OFF –ON
Setup, Connection:
To setup your system for injector duty you must first find the correct signal wire to connect too.
You must locate and tap onto one of the two wires going to the fuel injector. One of the wires
will be switched +12V (typically red) and the other will be the desired signal wire from the ECU.
Using a voltmeter you can determine if you have the correct signal by watching the voltage as
the engine is running. As duty cycle increases and more fuel injected, the measured DC voltage
will appear lower as viewed on a voltmeter. If you have an oscilloscope or a way to measure
duty cycle this is even better. Once you are sure you have the correct signal you can tap on to
the signal and connect that to pin #11 (blue wire) on the controller.
Testing:
To test your setup it is recommended you finish the installation, but before installing the nozzle
you run the engine and ensure the system is operating as expected. That is when the engine is
running you want to ensure you are not getting flow when the engine is turned off or is not
expected. This could be due to improper wiring or the incorrect mode selected.

Page 12
0-5V MAF Installation
Operation:
The 0 –5 Volt MAF mode is designed for vehicles where MAF is used and the output of their
MAF sensor is 0-5V and not a frequency.
Dip Switch Settings:
Mode
DIP Switches
Common Applications
0 - 5 Volt
ON –ON –ON
VW/Audi 1.8T
Subaru WRX/STi
Nissan S13/S14/S15/300ZX
Setup, Connection:
To setup your system for MAF you must first find the correct source to connect too. In order to
locate the correct signal the use of a voltmeter will be required. Once you have located your
MAF sensor you can begin to check the wires for the “signal” wire. The signal wire should
remain at or near 0 Volts when the car is turned off or is not running. Once the vehicle is started
it should continue to remain at or near 0, however it may begin oscillate up and down slightly. To
determine if you do in fact have the correct wire you can try and rev the engine while monitoring
the voltage. If the signal rises and falls with the engine speed then you have likely identified the
correct wire. If you are experiencing difficulty locating the signal wire, refer to the vehicle’s
service manual to locate the MAF signal wire, and then try to verify again with a voltmeter. Once
you have found the correct signal wire you may tap onto and connect it to pin #11 (blue) of the
Water Methanol controller.
Testing:
To test your setup it is recommended you finish the installation, but before installing the nozzle
you run the engine and ensure the system is operating as expected. That is when the engine is
running and the MAF sensor is outputting in a range set by the controller you will get flow. You
want to ensure you are not getting flow when the engine is turned off or when it is not expected.
This could be due to improper wiring or having the incorrect mode selected.

Page 13
Frequency MAF Installation
Operation:
The Frequency MAF mode is designed for vehicles where MAF is used and the output of their
MAF sensor is digital and a frequency.
Dip Switch Settings:
Mode
DIP Switches
Common Applications
Frequency MAF
(40Hz - 220Hz)
OFF –ON –OFF
1993 and older GM
Frequency MAF
(400Hz –2200Hz)
OFF –ON –ON
1990 –1999 Mitsu
1G/2G DSM
Frequency MAF
(2kHz –14kHz)
ON –OFF –OFF
1994+ GM
VW 2.0T, etc
Setup, Connection:
To setup your system for MAF you must first find the correct source to connect too. In order to
locate the correct signal the use of a voltmeter will be required. Once you have located your
MAF sensor you can begin to check the wires for the “signal” wire. The signal wire should
remain at or near 0 Volts when the car is turned off or is not running. Once the vehicle is started
it should remain at or near 2.5 Volts. This is because the signal has a duty cycle of 50% and a
voltage range of 0-5V so the average voltage will be about ½. To determine if you do in fact
have the correct wire you can try and rev the engine while monitoring the voltage. It should
remain the same regardless of the engine speed; if you are experiencing difficulty locating the
signal wire, refer to the vehicles service manual to locate the MAF signal wire, and then try to
verify again with a voltmeter. Once you have found the correct signal wire you may tap onto it
and connect it to pin #11 (blue) of the Water Methanol controller.
Testing:
To test your setup it is recommended you finish the installation, but before installing the nozzle
you run the engine and ensure the system is operating as expected. That is when the engine is
running and the MAF sensor is outputting in a range set by the controller you will get flow. You
want to ensure you are not getting flow when the engine is turned off or when it is not expected.
This could be due to improper wiring or having the incorrect mode selected.

Page 14
Pump/Tank Flush
After all wires are hooked up, add water to the tank and with the hose pointed into a container,
press and hold the “TEST” push button on the controller module. The “TEST” button can be
used to test the system. The pump speed will gradually increase from zero to full speed over 3
seconds, and then remain full for another 3 seconds before stopping. Repeat the “TEST” button
procedure until you are sure the system is free of any debris that may have been in the lines or
tank. Drain the water out of the tank and refer to the next section on installing the nozzle.
Nozzle Selection and Assembly
This injection kit includes three different sized injection jets that cover a very large range of
horsepower levels. Use the following chart to select the appropriate jet for your power level.
The kit comes with one medium nozzle already preassembled.
HP
Fuel Flow
N/A (.5 BSFC)
Fuel Flow
F/I (.7 BSFC)
W/M Flow
N/A
W/M Flow
5-10psi Boost
W/M Flow
10-25psi Boost
W/M Flow
25+psi Boost
150
788
1101
95
220
275
330
200
1050
1469
126
294
367
441
250
1313
1836
158
367
459
551
300
1575
2203
189
441
551
661
350
1838
2570
221
514
642
771
Nozzle
400
2100
2937
252
587
734
881
250
450
2363
3304
284
661
826
991
500
500
2625
3671
315
734
918
1101
1000
550
2888
4038
347
808
1010
1212
1000 + 500
600
3150
4406
378
881
1101
1322
1000 + 1000
650
3413
4773
410
955
1193
1432
700
3675
5140
441
1028
1285
1542
750
3938
5507
473
1101
1377
1652
800
4200
5874
504
1175
1469
1762
850
4463
6241
536
1248
1560
1872
900
4725
6608
567
1322
1652
1983
950
4988
6976
599
1395
1744
2093
1000
5250
7343
630
1469
1836
2203
The nozzles are serviceable and can be disassembled for cleaning. If you find excessive debris
in the screen, check your tank for contamination. When installing the screen it is only necessary
to be slightly tighter than finger tight. Do not over-tighten. The nylon washers are reusable but
a spare is included.
Pintle/Screen Assembly
Nozzle Body
Jet/Orifice
Nylon Washer

Page 15
Nozzle Mounting
Select the location where the nozzle will be installed. Nozzle should be mounted such that it
is higher than the tank. Nozzle must be mounted before the throttle plate. Nozzle should also
be mounted after the MAF sensor if present. Nozzle must also be mounted after any
intercoolers. In most instances, mounting the nozzle 6-8” ahead of the throttle body provides an
excellent combination of air charge cooling and combustion control.
In most instances, the air charge piping can be drilled and tapped for 1/8” NPT to directly mount
the nozzle. If using thin walled tubing it’s suggested that a bung be welded to the piping.
Mounting hole should be tapped deep enough to allow the end of the nozzle to be nearly flush
with the interior of the intake once the nozzle is fully installed.
Pump/System Check
The “TEST” push button on the controller module can be used to test the system. Press and
hold the button to activate the pump. The pump speed will gradually increase from zero to full
speed over 3 seconds, and then remain full for another 3 seconds before stopping. When the
button is released the controller will return to normal operation.
Add water to the tank and with the nozzle pointed into a container, press and hold the test
button. The flow will start gradually and increase to a steady amount. If this happens then your
system is connected properly. Check and repair any leaks. Drain the water out of the tank and
install the nozzle.
Fluid Compatibility
Under NO circumstances should any hydrocarbon based fuel ever be used with this system.
Water and Methanol are the ONLY fluids to be used.
Nozzle installed before the throttle
plate, after the MAF and any
intercoolers.

Page 16
System Errors
The controller will continuously check for errors; when an error is detected it will be reported to
the user by a flashing sequence of the external LED, as well as a corresponding red flashing
sequence of the status LED. Damage to vehicle or engine may occur if these faults are not
resolved immediately. The water-injection system may not operate properly or at all while an
error condition exists. Please refer to the table below for further information.
# of
Flashes
Error
Description
Controller/Pump Status
Recommended Action
1
Low Fluid
The amount of fluid in the
tank has been detected to be
below the level of the sensor.
- BoostSafe Enabled
- Pump will continue to
run
Refill fluid reservoir.
2
Pump
Open
Circuit
An open circuit has been
detected in the circuit (wiring)
that drives the pump.
- BoostSafe Enabled
- Pump will NOT continue
to run
Check for a blown
controller fuse and pump
wiring for disconnects.
3
Pump
Short
Circuit
A short circuit has been
detected in the circuit (wiring)
that drives the pump.
- BoostSafe Enabled
- Pump will NOT continue
to run
Check pump wiring for
shorts to the chassis.
4
Voltage
Out of
Range
The voltage powering the
controller has been detected
to be outside the range of
8.5V - 16V.
- BoostSafe Enabled
- Pump will NOT continue
to run
Check power connections
to controller and that
vehicle charging system is
operating properly.
5
Frequency
The external input signal was
found to be out of range.
- BoostSafe Enabled
- Pump will NOT continue
to run
Check user selected
mode, and or wiring.

Page 17
Troubleshooting Diagram

Page 18
Controller
Settings
The AEM Water Methanol Injection Controller is a progressive type controller. This means that
fluid will be injected in proportion to the amount of boost that is detected by the external MAP
input. In other words, higher signal input equals more fluid. It is therefore imperative that the
external signal connection be made properly and securely or vehicle/engine damage could
occur. In addition, the controller will automatically compensate for any fluctuations in battery
voltage variations to ensure consistent flow under all conditions.
The two knobs on the face of the controller dictate at what signal input minimum fluid injection
starts and at what signal input maximum/full fluid injection occurs. Fluid injection will
‘progressively’ increase between these two points as set by the adjustment knobs.
The “Start” dial has a range from 0% (full counterclockwise rotation) to 100% (full clockwise
rotation). The “Full” dial has a range of 0% (full counterclockwise rotation) to 100% (full
clockwise rotation). It is suggested to adjust the “Start” value by setting the dial to
approximately 25% of the vehicles maximum signal input. Adjust the full-in value to your
maximum possible percent for signal input. These are only suggestions; improper use or setting
could result in engine or vehicle damage -- please consult your tuner.
Mode Selection
The mode can only be selected or changed while the unit is turned off. To change the mode
remove the back cover exposing the three DIP switch selectors. Follow the guide on the
controller to select the appropriate mode for your application.
Status LED
The controller has an on-board Status LED. This will mimic the operation of the external LED.
Upon startup the current mode is flashed in green on the status LED. It will flash error codes in
red as well as illuminate with varying intensity as a function of flow in green.

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Fuse
The controller has an externally accessible fuse. The controller itself will turn on and function,
but the pump will not run without the fuse. If the controller is reporting an open circuit it may be
that the fuse has blown, and or is not installed correctly. Use a 15 amp fast blow fuse for
replacement purposes.
“Test” Button
The Test button feature is available to test the systems functionality. This feature should be
used ONLY with the nozzle disconnected from the engine. This is to prevent unintentional
pumping of fluid into the engine. To operate the test button press and hold. The pump speed
will gradually increase from zero to full speed over 3 seconds, and then remain full for another 3
seconds before stopping. Flow should begin gradually and then hold at full pressure for a total
test time of 6 seconds.
Short circuit self-diagnostics
There are two modes of pump-driver short circuit protection available. One can detect a short at
any time but produces a slight buzzing in the pump. This should not be noticeable under most
conditions, but can be turned off if it is objectionable. If turned off, a short circuit can only be
detected when the pump is running.
To enable or disable this diagnostic (and the buzzing): Press and hold the “Test” button while
applying power to the controller. The change is acknowledged by a single long flash of the
status LED output and the external LED. Once the button is released the controller will continue
to function normally. You can also tell what mode has been selected by listening for the buzzing
sound in the pump. Repeating this operation will toggle between the two modes.
A More Linear Flow Output
AEM’s Water/Methanol Injection system delivers a linear flow rate as pump speed increases.
This is unlike competitors’systems that simply have a linear pump speed drive between start
and full settings which results in a non-linear delivery of water/methanol. AEM’s system
linearizes the flow, giving you better flow control and a more progressive delivery of
water/methanol.

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Boost-Safe Output (optional)
The progressive controller includes a Boost-Safe output (grounded when active) that activates
whenever the system is armed and runs out of fluid or an error code is flashing. The green wire
on the controller is the 1.7 amp switched ground. This wire can be hooked up to a solenoid that
will vent waste gate pressure when activated. Apply 12v to the other side of the solenoid (AEM
P/N 30-2400 or equivalent). This output can also be used to trigger a timing retard function in a
standalone ECU or a CDI whenever the system runs out of fluid, thus protecting your engine. It
is highly recommended that this feature be utilized.
Solenoid Driver (optional)
The progressive controller includes a Solenoid output (Brown with White strip wire grounded
when active, 1.5A max) that activates whenever the system is pumping. The wire should be
connected to the ground side of a solenoid, with the other end of the solenoid connected to
switched ignition power. The solenoid should be installed after the pump and before the nozzle.
For best results install the solenoid close to the nozzle.
Non-Progressive Operation (optional)
The progressive controller is capable of operating in a non-progressive manner, acting as a full
on or full off type system. To set this up the “Full PSI” knob must be set to a lower value then the
“Start PSI” knob. This means as soon as the boost exceeds the “Start PSI” threshold the pump
will begin pumping at its maximum flow since it has passed both the start and the full
requirements.
Engine Tuning
Water/methanol injection is generally not considered a bolt-on power adder for forced induction
gasoline applications. Engine tuning is usually required in order to maximize potential power
gain. Water/methanol injection allows for a more aggressive tune to be used while still using
pump gas as your base fuel. With conservative boost and timing, establish a base AFR that is
one point higher than your final target AFR. For example, if your final target AFR with
water/methanol injection is 11.0:1, set your base AFR to 12.0:1. Once the base AFR has been
set, start injecting water/methanol and adjust the injection flow rate to achieve your final target
AFR. For example, if before injection your base AFR is 12.0:1 and then during injection your
AFR drops to 10.5:1, reduce the water/methanol flow rate until your final target AFR is reached.
It is generally recommended that the flow rate of the injection system be changed in order to
reach your target AFR and NOT your primary fueling. Injection flow rate adjustments can be
made by changing your nozzle selection or by adjusting the “Start PSI” and “Full PSI” settings.
Once the injection flow rate is set to deliver your desired final AFR, boost and ignition timing can
be increased to take advantage of the additional air charge cooling and detonation control.
When injecting the correct amount, a 50/50 mix of water/methanol has been shown to provide
an effective octane of over 110 when using a base fuel of 91-93 octane pump gas. A properly
tuned water/methanol injection system will usually support a typical “race gas” engine tune.