Loud humming sound after change of exhaust..

[BlackStealth]

Re: Loud humming sound after change of exhaust..

Agreed.
I have tried Operated Box, Remus for 2 days(cant take it), Hi-op(still loud but better), super sprint,with and without the resonators, with and without the mid pipe, 3" diameter pipes, with auto and manual for rpm control, with or without headers, combo of both and none of all.....

I must say, Supersprint along with its mid pipe has the best balance of Feel to Noise ratio.
Least Resonance. Soft Tiger.... I like.

Hi, I had this problem with my E46 as well. It's called the 'exhaust drone'. Very loud at 2-3k rpm. Can't really do anything about it. If want you compare to your stock cabin quietness, don't bother.
I tried a Remus and returned it to Ricky for a slight loss after 2 days. Tried the Hamann next and sold it too. Supersprint was the most quiet of the lot but still could hear the drone. Tried soundproffing but no much better as well. Guess you have to live with it if you want the performance gains.