CDI Support TPS (Throttle Position Sensor) can provide more manipulative riding feeling. TPS used in a way that it can be used to replace MAP (Manifold Pressure) Sensor, to indicate the load of engine.(In fact, TSP is a reference parameter (Remedial Action) when MAP sensor Failure condition happened.) TPS function but increases the complexity of the ignition timing chart will increase. The same, TPS also affect the calibration problems after installing to the vehicle. So for EMS(Engine Management System) is: TPS support functions, can be considered the basic concepts developed ECU.