AEM 30-6310 Series 2 Plug & Play EMS - Manual (Page 7)

Page 7 of 15
Unused accessories:
The check engine light (LS10 output) is configured as a shift light at 7000 RPM but this
value can be changed.
The stock “boost” gauge is not used on 2G DSM vehicles.
Major pinout differences, 2G DSM vs EVO8:
Fuel Pump: LS11 output (pin 8) for 2G DSM, LS6 output (pin 22) for EVO8.
A/C relay: LS6 output (pin 22) for 2G DSM, LS11 output (pin 8) for EVO8.
Fuel Pump Control
There is a main Fuel Pump Relay (LS6 output for the EVO8, LS11 output for the 2G DSM)
which is used to turn the pump on or off.
The INJ5 output (pin 3) controls the Fuel Pressure Solenoid on both the EVO8 and 2G
DSM. The Fuel Pressure Solenoid causes the Fuel Pressure Regulator’s vacuum line to
reference atmospheric pressure rather than the intake manifold pressure. This will allow
for increased fuel pressure in vacuum, but the lack of pressure reference will lead to
insufficient fuel pressure when manifold pressure is above atmospheric pressure. This
output is always disabled in the start-up calibration.
The LS1 output (pin 39) controls the Fuel Pump Low Speed Relay, which is only present
on the EVO8. This relay can be activated to decrease voltage sent to the fuel pump. This
output is always disabled in the start-up calibration.
WARNING: Reducing the voltage sent to the fuel pump can affect fuel pump output
(volume and/or pressure). If you wish to decrease fuel pump speed, monitor fuel pressure
and air/fuel ratio very carefully to avoid engine damage!