A fan of Se11s for a few years now and have them on my 04 heritage I have to admit they do have a tinny cheap sound at times.. OK, what if I put in a custom cut exhaust pipe insde from the end of the baffle to the end of the real pipe shaped to fit.. (maybe from a exhaust shop) as this is basicly a lining it would not restrict air ,exhaust flow,,, the goal is for aless tinny sound,and hpoefully deeper sound... all positive replys welcome , thanks,,,,,,,,,,

 

try it and let us know...FYI evertime I have played with the internal part of a muffler it usually messed it up more and who knows what it does to flow of the pipe.