Quote:
Originally Posted by crainholio
It sounds like it was running fine before the header install, and the problem started afterward.
If this is the case, you probably have a damaged spark plug and/or plug wire. It's fairly common when doing header swaps if you don't replace the plugs after the headers are bolted up, or the plug wires aren't fully seated.
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i replaced plugs and wires during swap...figured plugs were nice and easy with nothing in the way...i did however have and 02 sensor code prior to doing the install but the light currently isnt on, could a bad 02 sensor cause this backfiring....also when i turn the a/c on the engine lugs down a little and sounds like it has a miss for a few seconds then it goes away
....also prior to doing the header install my car would pop a little between shifts until it hit about 110 degrees on the gauge then it was fine...is this the same issue and now i just opened it up and made it worse??