got my swap in my 95 ls. the first spark plug is strip, so i went to autozone and bought a strip fixer. bought some new wires and plugs, cranked up my car. the car sounds good until it's all warmed up. that's when it idles low, below 1k, and when you rev, it kinda sound like it's bogging. also, it's backfiring sometimes. we used a B20 coil and everything to rebuilt my ls dizzy. any suggestions?