When swapping a sequential transmission into one of these cars it’s important to find a way to tell the engine to reduce torque while shifting. You can either do this with a strain gauge input and multiple custom maps or using a unit like the geartronics unit along with a single custom map. Given the simplicity we’ll cover using the Geartronics Unit here.
Geartronics Unit
Start by wiring your geartronics units “Cut Signal” into the CPC solenoid circuit. This enables a method by which the ecu can see the input and react to it.
With that installed you can set up your custom maps.
Custom Map Parameter | Setting | Function |
|---|---|---|
Activation | Always Active | |
Enable | In all drive modes | |
Output | Ignition Base Timing | Add Map Output To Channel |
X Input | CPC Pressure Sensor V | Interpolate Between Cells |
Y Input | Engine RPM | Interpolate Between Cells |
Setting it up in this manner allows you to have a reduction of timing (in the example 30 degrees) whenever the geartronics units receives the cut signal from pulling the shift lever. The unit also sets up a delay for how long it occurs, otherwise you can add a custom map to control the delay and how long it holds the cut for.