I have a 2005 Sierra 5.3L that needed a new muffler and I wanted something that had a nice deep sound but wasn't loud. The problem is there are so many aftermarket mufflers that have reviews all over the place. Too loud, too quiet, mumbling like an ex-wife. Dynomax is one of the few that I haven't tried yet, so I decided to give it a try. I bought a Super Turbo, several exhaust adapters from 3" to 2 3/4" and a resonator exhaust tip to battle any drone at highway speeds. Took me about 2 hours to