I just had a new exhaust system put on with duals into a dual inlet dual outlet
Aero stainless muffler. Anyway it has about 50 miles on it and today when I drove in the rain I noticed a fairly large amount of fiberglass stuck to the bumper. Started it and noticed fiberglass coming out of the exhaust. I haven't put a muffler on something in a long time so how much of this coming out is normal?

 

I know that some fiberglass packed mufflers, (or glasspacks), are known for the fiberglass quickly blowing out of them, and they get much louder. Not sure if it's considered "normal", but it's expected with many glasspacks. At some point I assume that all of the fiberglass will blow out of the muffler and it will be at the point where the muffler's sound and tone will be consistent. If the muffler flows well and you're happy with the sound, I'd let it ride and not worry about it

 

Still noticing a change in the muffler?
I've been lookin into this company alot lately, actually ready to order one up.. your issue has me scratchin my noggin and thinkin twice.
Direct from their site:
"Every component of the Aero Exhaust is completely stainless steel. There is no fiberglass or steel packing to corrode or burnout, or baffles to rust or displace. The Aero Exhaust is truly a lifetime product."

Anybody else have a similar experience to Scooter's with Aero mufflers?

 

I just heard from the shop that I had my exhaust done at that Aero went bankrupt two weeks ago. My aero muffler got replaced and it did have fiberglass in it which was completely gone in two weeks.

 

Interesting.. Quite a story behind the Aero boys and the trouble their in...

 

Care to expand please.