Mark S.

Looks pretty interesting.  I need a small, lightweight muffler for the single rotor project, and have been thinking of these:

http://www.burnsstainless.com/UltraliteMuffler/ultralitemuffler.html

It sounds like there's either ceramic, or stainless packing in the Burns muffler though, and no lifetime warranty.  

Rusty (off to do another 30 minute test for oil leakage)