Originally Posted by def
Experts, correct me if I'm wrong but our boxer's ECU brains have only four inputs;
1: Throttle position.
2: Lambda signal
3: Ambient air temperature
4: Engine speed
I know that engine oil temperature is also measured but I am unaware if this parameter is used by the Motronic.
That's not much information to work with considering an automobile has MAP and other additional inputs to work with when determining engine fueling needs.
Don't forget air density.