AEM 30-6311 Series 2 Plug & Play EMS User Manual
Page 7
Page 7 of 12
Peak and Hold Injector Drivers
Injectors 1-6 include Peak (4 amps) and Hold (1 amp) injector drivers. These drivers may
be used with peak and hold or saturated type injectors. The factory Mitsubishi wiring
harness contains a resistor pack to prevent excessive current when using low-impedance
injectors with the stock ECU. With the 30-6311 installed, users can elect to remove and
bypass the OEM resistor pack for more precise control of low-impedance injectors.
Please note that the injector response time will be different with and without the factory
injector resistor pack. If the OEM resistor pack has been removed and bypassed, please
choose the correct battery offset for your injectors using the Setup Wizard. Most battery
offset wizard configurations will specify
without a resistor pack.
Unused accessories:
The EMS does not support the Active Exhaust found on the 91-93 models. If you still have
this, it must be disconnected from the ECU (pin 102). If not disconnected, a whirring noise
will be heard from the AE drive motor located in the left rear quarter panel on the car.
While this causes no damage, it is quite annoying.
The stock “boost” gauge is not used.
Wiring accessories to the EMS:
Please follow this suggested wiring diagram when adding accessories such as UEGO
gauges, MAP sensors, IAT sensors, or switches for use with the EMS. Note that wire
polarity is not important for the Air Temperature sensor.