I've noticed that Staintune (and perhaps other makes) use stainless packing in their mufflers. Why would they do this? Stainless packing would make the muffler heavier and get hotter. Does stianless packing in mufflers produce a better note? The reason I ask is because I like the design and look of the staintunes but I am wonderng what benefit I'll get from stainless packing. By the way this is not for my ZZR :grin: . I am just looking around and dreaming of the perfect sytem to put on my next bike.......a V-Twin Cheers.