My car is driving me nuts! I found a burnt wire on the O2 harness and fixed it with a butt connector, this problem is not as bad but it still exists and I dont know where else to start looking, I can be driving my car in 4th gear at 2000 rpm for example, then I can accelerate and it backfires through the exhaust, it will backfire just a little then smooth on out. Anyone have any ideas? It mostly does it when you first start diving the car, the problem seems to no be as frequent once the car is warmed up, It seems like it's coming from the driver side but it could be the passenger side exhaust also