I have the Flowmaster A/T mufflers on my car and it sounds like they finally bit the dust. When you romp on it you can hear the rattle when you pass through a specific frequency. I've suspected it for a while, but now its loud enough that there is no doubt about it. I know theyre covered under warranty, but has anyone actually sent theirs back? I'd like to know the ins and outs of that whole ordeal. What do you do in the time period of them examining your mufflers? I was thinking of buying some Boom Tubes then just selling the replacements they send me. Let me hear your thoughts!

 

I had this same problem with my American Thunders.

 

i have A/T to, how long did ur last?

 

2.5 years

What did you do about yours, Jersey?