Quote:
Originally posted by svxistentialist
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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I realize that the TCU takes other factors into consideration, but I am assuming that the RPM value plays a large role in shift points.
The ECU, however, will not see any changes in the RPM value. The ECU feeds RPM value to the TCU. Modifying this connection between the ECU and TCU will not change anything that the ECU sees, regarding RPMs.