AEM 30-3351 V2 Water Methanol Injection Kit Multi Input Controller - Manual (Page 11)

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.