A muffler delete on my brother's 330i (same engine) sounds perfect: deep, growls when you stomp on it, but no drone and perfect for daily driving. With OEM M sport BMW tips and custom piping/labour, cost was around ~$400.
Wouldn't waste my money on exhaust systems after hearing it, unless you are doing headers back, xpipes, etc.
Edit; work was done at Minute Muffler on Finch, Frank and the rest of them are good guys that do good work.
www.enthusiastauto.caNeed a car???
--'00 BMW ///M5 .:Jet BLK/BLK:.Individual- Modded
--'07 BMW M5/6.:Indianapolis Red
'91 BMW 850i J Spec Modded
'88 BMW 635CSi Lowered
'81 MB 500 SEC Koenig WILD RIDE
Last edited by bmwm5lover; 05-27-2015 at 10:51 AM.