My treats pipe was just so loud. I figured the baffling was 4 years old so I should repack it. When I took the cap off. . . there was NO fiberglass packing inside what so ever!
To repack a baffle start by drilling out the rivets.
See there was no packing inside!
Roll up some packing and wrap it around the stinger.
Put the cap back on and line it up with the holes.
Use rivets to put it back together.
Here is a video before and after. It is a totally different sound.