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PWM Verses RPM Mode 9 In this mode you can set the PWM duty according to engine RPM in 500 RPM increments. The system will interpolate between RPM points to achieve a smooth transition.

For example, you can use this mode to control turbo boost level at 500 RPM increments and the system will provide a smooth transition between RPM points.

PWM Verses Kpa Mode 10 In this mode you can set the PWM duty according to manifold pressure in 20 Kpa increments from –100 Kpa to 400 Kpa. The system will interpolate between points to achieve a smooth transition.

For example to control a water injection D.C. motor, you can set a low duty value at low manifold pressure and increase it as manifold pressure increases thereby increasing the motor speed and in turn increasing the water injection.

PWM Verses Throttle Position Mode 11 In this mode you can set the PWM duty according to throttle position in 5 percent increments from 0 percent to 100 percent. The system will interpolate between points to achieve a smooth transition.

For example to control a water injection D.C. motor, you can set a low duty value at small throttle openings and increase it as the throttle increasingly opens thereby increasing the motor speed and in turn increasing the water injection.

Closed Loop Idle control The ECU must be sensing manifold pressure via the built-in MAP sensor. I Although idle control sounds simple to achieve, the parameters and mathematics involved are quite complicated. EMS has tried to make it as simple as possible to set- up by providing a simple set-up procedure to follow.

Step 1: Ensure the engine is well tuned Ensure that the engine is properly tuned especially in the idle area. The automatic idle control will continually try to adjust a badly tuned engine around the idle RPM

Step 2: Select an output circuit to use Now we will need to use the laptop software for these adjustments. Set Idle control to off (this ensures that the valve will be closed) Type in the target idle RPM Set Initial open position to around 20 Set Max Steps to 255 Set idle vacuum to whatever the engine is currently idling on while at operating temp Set Additional Cold Open Position to around 60 These numbers are only starting points and will be adjusted to suit the engine.

Stinger 4 instruction manual version 2.0

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