This sensor indicates to the ECU what the driver wants to do. It is also used for many features in the ECU, such as fueling, accelerator pump, idling control, fuel cutoff, cam control, automatic transmission control, etc. It is possible to control the engine without this sensor but with limited drivability. If there is a TPS sensor on the engine, rather connect it. If not, un-select the check box and isolate the wiring.

For the ECU to operate correctly this sensor needs to be calibrated. Note: When pressing the throttle while calibrating, the Fuel Prime function may squirt some petrol on the cylinders. You may disconnect the P2 and P3 connectors so that these functions will have no effect.

Click on the Calibrate button left of the TPS check box and do the following procedure:

The TPS value must increase with throttle depression. If it is decreasing, click on Polarity to select Negative. This feature is normally used where the original ECU is still connected and wiring cannot be altered. In this case you connect only the ECU TPS signal wire to the OEM signal wire. Do not connect the ground or 5-volt signal wires but isolate them to prevent shorts. Now click the Calibrate button. The current TPS value will be written into the two blocks Min and Max.

Press the fuel pedal in completely and release the pedal completely. The Min and Max values will be indicating the range of the TPS. Click the Save button. You may now test the TPS signal by pressing the pedal in and releasing it. The TPS real time value should operate from 0 to 100%. Then click on the ‘Save to ECU’ button to make the changes permanent.

Show Graph

This checkbox will enable the TPS compensation graph . With this graph it is possible to add fuel % with the TPS position. It is handy to enrich the fuel mixture at full throttle conditions. There is no timing compensation for this graph.