if i upgrade the ecu on my car do i have to change any other parts?

Question

sensors?

i have a 91 300zx non turbo 140000 miles
i want to buy a jim wolf ecu

How much hp will that give me

I have a greddy exhaust and intake

Answer 1

If the ECUs have the same part numbers, you should be able to operate your vehicle without additional parts. If the ECUs have different part numbers with the same connector pin-out, then you will simply have to try to see if every thing works when you get it all put back together.

Answer 2

Just what do you want to do? What model year how many miles transmission type would help me answer. Generally we upgrade ECM when we add other things like exhaust headers free flowing intakes. Then we find more power tuning the. engine fuel mapping and electronic spark advance. Which is done on a dynometer Also in a effort to keep the check engine light off.