The ECU needs an input of engine load. The Omex ECU can use an input of throttle position or manifold absolute pressure (MAP). Most normally aspirated engines will use an input of throttle position as this gives excellent throttle response. Forced induction engines need to use MAP as there is no direct relationship between throttle angle and engine load due to the variable of boost pressure. However, forced induction still requires throttle position sensor (TPS) input for idle condition and acceleration fuelling information.
If using the engine's original inlet system, the OE sensor can normally be used. Omex stocks a variety of different throttle position sensors to suit different applications if not using the OE inlet.