Ok, I have always had a minor problem with backfiring since I put on 2 chambers and a Bassani O/R X pipe. Now ALL OF THE SUDDEN it backfires A LOT. It is so bad that even going from second and pushing in the clutch to go to third gear it backfires. I can't drive it like this. It does it all the time. I checked just now to make sure all bolts were tight and they were. So what could cause this all of the sudden? And more importanly, how do I fix it? Thanks guys!