I have tried multiple of things. I put a new engine harness. A new p28 ecu. My distributor was new when I did the rebuild. I made sure all of the wire plugs were in the correct spots. I did the timing 3 times to make sure it was correct. I need help!! I don't know what to do any more. It seems like I tried everything. It's a obd1 eg coupe with a gsr swap. I have a d15 harness and planned on running the vtec solenoid and pressure switch to the ecu once I got it running correctly. I have a check engine light and already did the pin test. It's throwing 7,8,10,16,19,22 and 41. I ran it before with out the oxygen sensor. It seems like it back fires when I floor it and Boggs down and tries to die.... Please help me out!!!