Best of luck with it, it sounds like a neat idea.
But, as the doctor says, both ECU and TCU are constantly evaluating a lot of signals other than just this particular voltage you want to modify.
What will happen to the transmission maps and the fuel maps when the ECU sees discrepancies between the signal you are generating and say information from the injector timing map?
What will it default to? Throw a wobbly?
Joe
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