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      10-26-2012, 10:27 PM   #65
ITMenace
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Drives: AW F10 550i
Join Date: Aug 2012
Location: SoCal

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Do you suspect there will be drone by replacing the muffles with those from a f10 m5 while keeping everything else stock?

Thanks for taking the time and sharing all the pics and videos. Great work.

Quote:
Originally Posted by Edman951 View Post
FYI, did another test on Friday.
i figured i should try all the possible combo's with my setup to find the sweet spot, and reduce the drone with out any parts.
So here is my conclusion.

-Stock center resonator (x-pipe) with my vibrant muffler = drone from 1300-2000rpm. But sound great.
- My X-pipe with with my vibrant muffler = same drone as above. from 1300-2000rpm. But sound even beter then with the stock center resonator.
-My x-pipe with factory mufflers = no drone, a bit of sound, but needs a bit more for my taste.

So to reduce drone, i will need to tap in to the line and add a resonance chamber. Like Active Autowerk does on the E9X M3 exhaust system.
Or maybe i will try this muffler from Dynomax. Looks interesting.
http://www.dynomax.com/mufflers.php?muffler=vt