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Throttle Position when there are two sensors?
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Post Throttle Position when there are two sensors? 
My engine is drive-by-wire. The throttle body contains two separate TP sensors.

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There are 2 individual TP sensors within the throttle body assembly.

The TP sensors are used to determine the throttle plate angle. The TP sensors provide the engine control module (ECM) with a signal voltage proportional to throttle plate movement. The TP sensor 1 signal voltage at closed throttle is near the 5-volt reference and decreases as the throttle plate is opened. The TP sensor 2 signal voltage at closed throttle is near the low reference and increases as the throttle plate is opened.


TPS 1 decreases in voltage.
TPS 2 increases in voltage.

Does it matter which I tap into so long as I know the voltage range? Is there a preference?

Also, there is an Accelerator Pedal Position sensor. Would that also work as a TPS reference for RaceCapture? It'd make wiring easier. It has 2 sensors, but they both increase in voltage.

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That is the first time I encountered that issue, I hope you get good answers here.

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Just tap into one of the sensors and you should be good. I'd pick the one that increases in voltage.


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