Well I searched and I could not find anything that gave me a answer. When im driving sometimes at around 2k-2.5k it will stumble. I guess its more of a surging because when I get it more throttle itll usually stop doing it. I guess last night when I was pulling out of Hooters and I was getting on the throttle a bit to around 3.5k-4k and I guess I had a backfire. Like a little bit of flames came out of my exhaust? Could that be O2s? Thanks fellas

david

 

anyone

 

actually its around 1500 rpms