Originally Posted by 1_2Mini
I pulled the plug out of my china muffler and wrapped it in regular pink fiberglass....it really helped reducing noise and so far no noticable reduction in power. The key is to wrap it just right...not too tight because the exhaust needs to flow through it, but not too lose as it won't really deaden the sound.
I use the "pink" in the silencer for my expansion chamber on my MB, really works good. Like you said just dont pack it in too tight..........