well earlier I went to the muffler shop and had my u bend and resinator taken off and replaced with a 2 1/2 pipe. then I bought some autolight 606 and ACCELL 8mm plug wires. the car ran fine after the exhaust work. the guy had welded the 02 sensorback into the pipe. well I took one plug wire and sparkplug out at a time and replaced it with my new plugs and wires. now after i'm done, my car sputters when i take off. I haven't taken any where but like rigt out my drive way and back, It's throwing the check engine light. i think it could be I didn't push one of the wires all the way onto the spark plug , but I can't check it until the engine cools down. what do you think it could be? I mean could the o2 sensor went out, would that cause it to sputter?but I don't think just cause changing SP wires , it would go out. can anyone help. I'll check that wire later and keep ya'll posted. thanx