aftermarket muffler lifespan?

[RICH MUISE]

What is the average lifespan of aftermarket mufflers, like Magnaflows? My car seems to be a lot louder than it was when they were new, 35,000 miles ago.

[Lgcustom]

How many years is that? Maybe you're just git'n too old!

[RICH MUISE]

Haha........definetly. 4 years

[Ford Blue blood]

Rich I don't think there is any "stuffing" in them, just baffles.  The "Flows" on my 08 Shelby are a little over nine years old with about 24K on them and they still sound the same.

[gasman826]

good news...your hearing is getting better

I have Flowmasters on two cars.  Both are stainless.  Both with tailpipes.  One set are twelve years old and the other only four years with no change in sound.

[RICH MUISE]

"good news...your hearing is getting better"...........now that's funny.
I used a flexible braided pipe connector for my H pipe crosspiece.........possibly it's sprung a leak.
Thanks guys, I guess I was thinking of the regular old mufflers that had a stuffing/mat of some sort.