Diabolical!

My Flowmasters rotted out and rattled like hell. Ultimately debris from the rotted out chambers partially clogged the exhaust and caused me to go crazy trying to find out why my car was running like crap whenever I got into the boost. Buy a good quality muffler or switch back to the stockers. (After I put the stockers back on, I find that they sound better with an off road x than the flows ever did.