AEM 30-6051 Series 2 Plug & Play EMS - Manual (Page 3)

Page 3 of 15
Read and understand these instructions BEFORE attempting to install this product.
• OE Speedometer Functionality
Please note that the 30-6051 EMS is configured to drive the original 1996-2000
Honda Civic speedometer by outputting the appropriate signal on pin A9. This
signal is calibrated to use the OE Honda Civic dashboard, replacing the OE
speedometer with one from a different vehicle may change the behavior of the
gauge.
• Engine Wiring Harnesses, ‘swapped’ engine installations
It would be very wise to double-check that the pinout destinations for the circuits is
accurate to the provided documentation. This is especially true if the vehicle
contains a ‘swapped’ engine or if the wiring harness has been cut, spliced,
soldered, tapped or modified in any manner. It is the user’s responsibility to check
that the wiring on the vehicle matches the pinout chart in this document. AEM will
not be held responsible for loss or damage that can occur if the EMS is installed in
a vehicle in which the wiring harness does not match the AEM-supplied pinout
chart!
• EMS Fuel Map, Boost Fuel Trim Table
The 30-6051 calibration maps provided do not utilize the “Boost Fuel Trim Table” to
provide a 1:1 fuel compensation below atmospheric pressure since the calibration
was created on a naturally aspirated vehicle (A calibration is provided above 100
kPa). To use this table, the “Boost Fuel Trim Table” should be configured to provide
twice as much fuel when the manifold pressure is twice as high and half the fuel
when the manifold pressure is half as high; this should help simplify the tuning
process for different vacuum and 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…
• AEM EMS coil/injector differences from original Honda ECU:
The AEM EMS fires cylinders based on a different numbering scheme than the
original ECU. The chart below shows how the original cylinder numbers correspond
to the EMS coil/injector numbers. This is configured in the base calibration already
and is shown in the pinout tables later in this document.
Vehicle cylinder number AEM EMS injector number AEM EMS coil number
1 1 1
2 4 4
3 5 5
4 3 3
5 2 2
6 6 6