My current ecu is 3bar, S4's, 370's, 9.5:1 cr, stock maf, rear O2 sensor delete, egr removal. This was programmed for my 95 se-r lp engine-which is dead. I am going to use an Avenir motor. What I want to know is will there be any drivability problems with this ECU and an Avenir motor without the S4's? You know ECU is 9.5:1, engine is 8.5:1. I don't want to send the ecu back to JWT to change just the cr setting. thanks
i had the same question. i called JWT and they said the ecu will work but the timing maps are more conservative with the 9.5:1 program. i asked if more base timing would correct this and he advised not to do that because the timing is not a linear curve thru the rpm range, so may have too much timing at certain rpms'. i haven't got mine running yet so thats all i know.
If I send the ecu back for reprogramming, I want to make it worth the $100. Would going to a Z32 maf, 4bar 370's be worth while on the stock T25? I may swap to a T28 a few months down the road. Just trying to think ahead. I know anything above 12psi will kill the T25 quickly.