AEM 30-6611 Series 2 Plug & Play EMS User Manual
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Read and understand these instructions BEFORE attempting to install this product.
**Cam / Crank Angle Sensor: AEM trigger disc MUST be used
Discrepancies have been observed in the OEM cam/crank angle signals between model
years and/or trim levels; to avoid confusion the Series 2 EMS does not support the OEM
Nissan trigger pattern. A replacement trigger disc is now included with every Nissan EMS
and must be installed before attempting to start the engine. An AEM trigger disc is
supplied with each 30-6611 EMS which fits KA, GA, and SR sensors. Please consult the
following instructions supplement, which will be installed to the C:\Program
Files\AEM\AEMTuner\Instructions folder:
‘10-6610-A for EMS - 30-661X supplement- CAS trigger install KA, GA and SR
engines.pdf’
Primary Load Sensor, EMS Fuel Strategy
The factory MAF (mass air flow) sensor(s) can be removed to help decrease intake air
restriction; the EMS can be configured to use a MAP sensor to determine engine load.
It is recommended to use a 3.5 bar MAP sensor or higher (P/N 30-2130-50).
The factory Mass Air Flow sensor can be used as the primary load input for the AEM EMS
if desired. Please check the Notes section of each calibration for more info about the
vehicle setup and fuel strategy that calibration was configured to use.
EMS Fuel Map, Boost Fuel Trim Table
The 30-6611 maps provided utilize the “Boost Fuel Trim Table” to provide a 1:1 fuel
compensation above atmospheric pressure. In the startup calibration, the “Boost Fuel Trim
Table” is configured to provide twice as much fuel when the manifold pressure is twice as
high; this should help simplify the tuning process for different boost levels. Notice the
values in the main “Fuel Map” do not change above 100 kPa (0 psi boost), the fuel
correction is being made by the “Boost Fuel Trim Table.”
Note: the “Boost Fuel Trim Table” must be adjusted if a different MAP sensor is installed or
if the Load breakpoints are adjusted. The Boost Fuel Trim value should be set to -90 at
10kPa, 0 at 100 kPa, +100 at 200 kPa, +200 at 300 kPa, etc…
Peak and Hold Injector Drivers
Injectors 1-4 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 Nissan wiring harness
may contain a resistor pack to prevent excessive current when using low-impedance
injectors with the stock ECU. With the 30-6611 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
use the correct battery offset wizard for your injectors. Most battery offset wizards will
specify