MAF Translator Gen-II User manual

Manual Version 1.0 2
MA F Translator Gen - II version 1.02

MAF Translator Gen - II
Use r Manual - - 2 - -
Table of Contents
Kit Contents: .............................................................................................. - 3 -
Available Accessories and Options: .......................................................... - 3 -
Introduction: ............................................................................................. - 3 -
Main Airflow Modes ................................................................................. - 4 -
Installation Details .................................................................................... - 4 -
Installation. ............................................................................................... - 6 -
Using the Keypad ...................................................................................... - 6 -
MAF Translator Gen- II Pages: ................................................................ - 7 -
MAF Translator Gen - II Setup ................................................................ .- 8 -
Standard Connections ............................................................................... - 9 -
Paramet er setting details for all pages: .................................................. - 10 -
Tuning with the MAF Translator Gen- II .............................................. - 14 -
Open Loop vs. Closed Loop .................................................................... - 15 -
AFR Tracking ......................................................................................... - 16 -
Glossary: .................................................................................................. - 17 -
MAF Translator Gen - II Harness Connec tor Details ............................ - 18 -

MAF Translator Gen - II
Use r Manual - - 3 - -
Kit Contents:
The MAF Translator Gen - II kit is shipped with the following items.
MAF Translator Gen - II unit
Standard splice harness, 10 pin
Standard splice harness, 4 pin (only 2 wires installed)
Splice and tap connectors
Manual
Available Accessories and Options:
Various MAF wiring adapters.
Laptop logging and tuning cable/ kit.
EGT/thermocouple interface
Wideband AFR sensor and interface (LC - 1)
Accessory power pack (offline power supply, 120VAC)
Introduction:
The MAF Translator Gen - II is a powerful electronic module that allow s the
user to tune the engine p er formance of a modern fuel - injected vehicle. The
unit is configurable for many different types of vehicles. Using its various
operational modes, the user can adjust fuel delivery to extract more
performance from their vehicles' engine.
Warning : The MAF Translator Gen - II is a powerful tool for adjusting the
operation of the engine. It is possible to mis - adjust the settings and cause
damage to the engine. The user must read and understand this entire User
Guide before attempting to install and use the MAF Translator Gen - II .
Adjustments should be made in small increments with continuous testing to
ensure the engine is operating within its mechanica l limits.

MAF Translator Gen - II
Use r Manual - - 4 - -
The primary function of the MAF Translator Gen - II is to allow the user to
adjust the air - fuel ratio of their engine. This is accomplished by adjusting
the amount of airflow the Engine Computer Module (ECM) or Engine
Control Unit (ECU) perceives is entering the engine. If the ECM/ECU
senses less airflow is entering the engine, it will command less fuel be
injected into the engine, thus making the Air/Fuel ratio "leaner". If the
airflow signal is reduced by 1%, the resultant fuel delivery will b e less by
1%. For example, an engine is consuming 100 grams of air per second, and
the ECU is delivering fuel for 12:1 Air/Fuel Ratio (AFR). If the airflow
signal to the ECU is reduced to 95 grams per second ( - 5%) , the ECU will
delivery fuel for this amo unt of air. The resulting AFR will be 12.6:1 (5%
leaner).
Main Airflow Modes
The MAF Translator Gen - II sends airflow information in the form of an
electrical signal (voltage or pulse frequency) to the ECU. Frequency signals
are send out on the green, "frequency out" wire of the 10 pin harness.
Voltage signals are sent out on the Brown (V Out 1) or the Gray (V out 2)
wires of the 10 pin Main harness. The unit can be used to tune the vehicl e
using the original MAF sensor, or an upgraded, alternative sensor can be
used . Examples include using a GM LS1 or LS6 MAF on a Toyota Supra ,
Mitsubishi Eclipse, or Ford SVO Mustang. The MAF Translator Gen - II is
compatible with a great number of MAF sensors, both frequency style and
voltage.
Installation Details
This section contains installation details that are not specific to any particular
vehicle. Please refer to the appendix and other installation diagrams
contained in the MAF Translator Gen - II kit. Harness connections are
referre d to by connector desig nation M or A (Main or Aux ) and pin number ,
for example the +12V main power input is connected to the pink wire at M5 ,
Ground at M10 . In this manual, TAP means to connect to a harness wire
without cutting it. Splice means to cut a harness wire and co nnect MAF
Translator Gen - II wires to the cut ends. If a connection diagram specific to

MAF Translator Gen - II
Use r Manual - - 5 - -
your vehicle is not contained in the kit, contact your distributor for a
diagram.
Wire Splicing and Tapping information
The MAF Translator Gen - II is installed by conn ecting wires into the
vehicle's wiring harness. Good connections are absolutely necessary for
proper, reliable operation. A loose or intermittent connection could cause
improper fuel delivery at full throttle resulting in engine damage. Squeeze
style ta p connectors are included in the kit due to their popularity, but are not
the most reliable means of connection. To use the squeeze style properly
they must be installed firmly . Regular slip - joint pliers are best for this. If
there is doubt about the us ers ability to install the squeeze taps properly, or
the wiring area is subject to vibration , soldering the connections is
recommended.
The pink spade connectors included in the kit are of the best quality and will
provide good reliability when properly c rimped. Inexpensive crimpers may
not crimp firmly enough. Tug on the crimped connection to ensure there is
no looseness and the wire does not pull out. When in doubt , solder the
connections.
For additional details on soldering the connections , refer to this guide:
http://www.mmxpress.com/technical/connections.htm

MAF Translator Gen - II
Use r Manual - - 6 - -
Installation.
If upgrading the MAF sensor, r emove the vehicle's original MAF and install
the upgraded MAF. If a plug - and - play harness is available, follow the
instructions included with it . Otherwise wire the new MAF such that the
signals use the original vehicle wiring. Install the MAF Translator Gen - II
wiring, splicing in to the MAF signal wire so the MAF Translator Gen - II can
alter its signal. If the original MAF had extra signals, wi re the analog
outputs to those ECU wires so the MAF Translator Gen - II can generate
those signals. Tap the TPS and RPM signals .
Using the Keypad
The MAF Translator Gen - II is equipped with a 4-key keypad and LCD to
allow the user to make tuning adjustment s to the unit without needing a
laptop computer or other external device. Most tunable parameters are
accessible from the keypad. There are 3 main sets of data that are
manipulated with the keypad: page , range , and setting. The page is selected
by hold ing the PAGE key, then pressing either Up( ) or D ow n( ) to
select the desired page. The page description is displayed while PAGE is
depressed. On any page, hold the RANGE key and use the Up( ) and
Down( ) buttons to select the range to be adjusted Use the Up ( ) and
D ow n( ) by themselves change the setting of that range.
For example, to adjust the airflow (and consequentially the air/fuel ratio) at
idle, se lect the AF Lo page by holding PAGE and using Up( ) or
Down( ) to select the Airflow Low page. Then hold the RANGE key and
use the Up( ) and Down( ) buttons to select the RPM range that s closest
to idle speed. Then use the Up( ) or Down( ) buttons alone to adjust the
setting.
The Config page is used to configure the unit for a specific kind of car and
airflow mode. Prior to version 1.02 the PAGE button needed to be held for

MAF Translator Gen - II
Use r Manual - - 7 - -
10 seconds to enable access to the Config page. This is no longer
necessary and the Config page is accessed in the same manner as all of the
other pages.
MAF Translator Gen-II Pages:
Use this page to set the operating mode for your specific vehicle
Config Select : Set the unit for the vehicle and sensors connected
System Set tings : Settings related to the selected configurations
AF Low: Low load AF tune vs. RPM
AF Mid: Mid load AF tune vs. RPM
AF Hi: High load AF tune vs. RPM.
MAF Sensor Tune : User AF tune vs. MAF flow.
AFR Tracking : Control how the unit uses wideband feedback at WOT
Aux Trig : User AF tune that is activated when the Window Switch output
is activated . This adjustment is only applied to the high load AF tune.
Sensor Monitor : Display operating and tuning parameters.
Spark WOT: Adjust WOT (Wide Open Throttle) spark advance (not all
vehicles)
Spark Aux: Adjust WOT (Wide Open Throttle) spark advance when the
window switch is activated (not all vehicles)
Window Switch: The Aux output (+12volts, 100ma) is activated when the
settings are all true and the delay time expires.

MAF Translator Gen - II
Use r Manual - - 8 - -
MAF Translator Gen-II Setup
The vehicle can be equipped with a larger hi gh performance MAF than was
originally installed. The new MAF is installed and wired to the MAF i nput
wire (yellow) . Configure the MAF Translator Gen - II MAF Input to match
the sensor installed on the vehicle. The MA F Output mode is set to match
th e vehicle and ECU/ECM. Frequency MAF signals are sent on the
Frequency Out wire (yellow), voltage MAF signals will be sent on either of
volt out wires (brown or gray). Be sure to configure the volt out mode for
Volt MAF . Some vehicles have MAF se nsor s with other functions or
signals . These other signals are typically Barometric pressure and Air
Temperature. These MAF sensors are actually "Air Volume" sensors, and
the ECU requires the temperature and pressure in order to calculate the
airflow mass. When using a true MAF sensor, the air temp and baro signals
must be kept constant to prevent double- compensation. These other sensors
can be simulated by the MAF Translator Gen - II , using the V Out 1 and V
Out 2 signals. Set the V out 1 and 2 mode to Use Setpoint in the Config
page, and set the output voltages to normal levels in the Setup page.
Frequency or Voltage MAF
RPM
Throttle Position (TPS)
ECU inputs
Voltage outputs
if required

MAF Translator Gen - II
Use r Manual - - 9 - -
Standard Connections
12 34
1
2345 678
9 10
Serial port
Aux trigger or logging
Wideband/O2 input
Wideband/O2 Ground
TPS Input
Frequency Output:
RPM input (5 volt signal)
Ground
12 Volts
on with ignition
MAF Input (Frequency/Voltage)
Aux Output
Analog Output 2 Analog Output 1

MAF Translator Gen - II
Use r Manual - - 10 - -
Parameter setting details for all pages:
Config:
MAF- In : Select function and scaling of MAF output
Select from list of available sensor types .
MAF- Out : Select function and scaling of MAF output
Select from list of available scalings.
RPM/Engine : Set to the number of cylinders of the engine
(exception: 96+ LT1, 4 cylinder )
Displacement : Displacement in Liters . Used to calculate Engine Load
Load Source : Determines the method used to determine engine load.
Engine load is used to determine which of the High Mid or Low load tune
settings are used. Selections are MAF/RPM (s caled in KPA), TPS (320 = 5
volts) , or a MAP sensor connected to the Aux input.
Wideband O2 : Select scaling of wideband input from the following list
Innovate LC1
Innovate LM1
AEM Gauge , AFM -1 , other ( 0 volts@10:1 , 5 volt @ 20:1 )
Tech Edge ( 2B02 ) Wideba nd
Zeitronix ZT2 Wideband
Dynojet Wideband Commander (0 - 5 volts = 10:1 - 1 8 :1)
AEM interface (non gauge unit)
DIY - WB
Aux Log Mode: Determin es logging function of Aux input wire .
No Aux Log (Reads only voltage)
Log EGT (requires adapter)
Log 2 Bar (calcul ates and logs MAP pressure from the aux signal)
Log 3 Bar (calculates and logs MAP pressure from the aux signal)
Log 3.5 Bar (calculates and logs MAP pressure from the aux signal)
Log 5 Bar (calculates and logs MAP pressure from the aux signal)