Performance
I have a totaled 93 ls automatic with a chipped obd1 p28 ecu, I also have a 91 ls auto obd0 with pr4a52 ecu, I'm wanting to drop in the a1 but not sure what to do about wiring, I would like to continue using the p28, I've read about jumper harnesses but I think they only work for 5 speed (I...