Throttle TPS

The Throttle TPS input is wired on the MAP sensor input of Orion2. It will relay the actual throttle position to the TxW controller. This signal is also connected to the ECU and TCU as a TPS input. In some cases, the ECU may supply the power to the throttle TPS, and in other cases it may be the TxW that supply the power of 5 volts. Do not connect both supplies together as it may damage some of the devices. The other systems must tap in to the TPS signal only. Note that systems that share sensors requires the same earth connection to ensure signal accuracy.

The Tuning Pot input is forced On and selected on launch. The POT register is used as a Dashpot damper in % throttle opening. When the throttle is blipped it will dampen the return to let the engine return to idle more gradually. This is very useful with automatic transmissions to prevent stalling. If the Pedal TPS value is greater than TPS idle cutoff, and revs is 500 rpm more than target RPM, then the throttle minimum opening is set to this POT Register %. When the pedal is release below TPS idle cutoff, then the throttle will be momentarily stopped at this opening and then returned slowly. Start with a small value and blip the throttle. See the effect of dampening at a slighter higher than idle RPM.