Originally Posted by bobbyboy545
the pin outs are the same except for the 2 vtec wires and i tried a friends ex ecu with the same results
I'm talking about all the other wires, not just VTEC. 90-93 chassis with 90-93 harness and a F22B1 engine swap, and POA ECU 94/95 EX MT, for that swap you have to swap A6 & A11 ( EGR , O2 heater ciruit ) for it to work.
I dont know about yours specifically since you have an OBD2 car. It sounds like some wires are not correct, especially if it pops the same code on a known good ECU. Did his car run fine after it was used in your car?