AEM 30-71XX Infinity Stand-Alone Programmable Engine Mangement System Full Manual User Manual

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Tuning Guide

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Fuel Cut Gain (Derivative)
Units: Derivative Gain
Description: The derivative term slows the rate of change of the controller output. Derivative
control is used to reduce the magnitude of the overshoot produced by the integral component
and improve the combined controller-process stability. Note: start tuning with this option at zero.
Once the proportional and internal term has the lambda close to the target, step this gain in
slowly until the target is achieved.

Spark Cut Gain (Proportional)
Units: Gain
Description: Proportional control is a pure gain adjustment acting on the error signal to provide
the driving input. If overshooting occurs, lower this value. If undershooting occurs, raise this
value.

Spark Cut Gain (Integral)
Units: Gain
Description: Integral control is implemented through the introduction of an integrator. Integral
control is used to provide the required accuracy for the control system. This is used to fine tune
once the proportional has acted in getting close to the target.

Spark Cut Gain (Derivative)
Units: Gain
Description: The derivative term slows the rate of change of the controller output. Derivative
control is used to reduce the magnitude of the overshoot produced by the integral component
and improve the combined controller-process stability. Note: start tuning with this option at zero.
Once the proportional and internal term has the lambda close to the target, step this gain in
slowly until the target is achieved.

Ignition Retard Amount
Units: Ignition degrees
Description: This is the amount of the ignition timing in degrees that will be pulled back in order
to manage engine power and maintain traction.