The droning really sucks if you drive the car very much.
Seriously S - U - C - K - S.
My challenger droned with the Dynomax turbos when I was running a pizz-poor Demon carb. On long drives I would get an ear ache on one side of my head. (ended up wearing an earplug loose in that ear when driving)
I switched to a Holley 700dp and the overall engine tuning and the muffler sound changed night/day and the Dynomax mufflers were much better and the droning went away. (MPG went up too)
LS S, Until recently, I thought the Dynmomax were too loud too. Now I think theyre great !
being Deaf isnt cool