i recently put a b18b in my 98 coupe.. When i put the p75 in it with the flop harness it runs horrible and dont even want to idle... When i put the stock computer in it which is the p2e it runs but it misses bad up until 3200rpm then clears up... i was told i might have a couple bad valves because when i pull the number 2 and 3 injector wire off there is no change in the tone of the motor.... And i was told that the reason it runs better on the stock computer is because its a single cam computer and its leaning it out.... Can someonr p-lease help me out thanks

 

1. Complete a compression test on the engine.
2. Complete a leak down test if you have access to one
3. Make sure all cylinders are getting spark.
4. Make sure all cylinders are getting noid.
5. Make sure your firing order is correct on your plug wires.
6. Make sure your injector wiring sequence is correct.
7. Check your malfunction indication codes & resolve them.

Hope this helps....