[RedBarchetta]

The packing material is a "ceramic blanket". I too looked at it and figured that it wouldn't be long before soot coated it good and the pipe eventually would become louder (which it has after about 3,000-4,000 miles of use).

Craig, keep me posted on your progress. I sent a $#!tload of business to John (he will remember me if you mention my name) and I wouldn't mind an improved version as well.

-Dean