Is it possible to blow the baffolds in a flowmaster with a couple of terrible backfires? Ever since the backfires my car sounds wayyy different.

 

I'd Imagine it is, I've known guys who've blown out normal mufflers as well as high performance ones with bad backfires. Geez when Mike's LeMans (Camrs89) backfired it sounded like a bomb went off, the glasspacks survived fine since they're totally straight through i guess.