M5 Expert (>4000)
Join Date: Jul 2006
Location: New York
Thanked 559 Times in 344 Posts
Well, your very first upgrade should be removing the charcoal filters. If you haven't pulled them already, go do it know. The DIY guide in the sticky makes it child's play.
As far as upgrading your exhaust, my recommendation is that you should not take anybody else's recommendations (ha ha, including mine). It is good to hear people's thoughts on their own choices, but picking an exhaust is a very individual decision. There are so many good options out there that all have sounds that differ slightly or are worlds apart. It is kind of like asking the board where you should go to dinner tonight or what flavor ice cream to get. At the end of the day, I would certainly give a lot of credit to what you hear here, but make sure you get a chance to hear your front runners in person. One great way to do that is to organize a local meet or board members.
2014 M5 Competition|Space Grey|Black Merino Full Leather|Anthracite Trim|Executive package|LED Lighting Package|Drivers's Assit Package|B&O Sound System|Bel STiR Plus 9500ci|IND Side Markers and Side Vents|Exhaustmeister|Pirelli Sottozero Serie II
Past Rides:'07 M5 Silver grey/Black(Nicely Modded)|'04 745Li Titanium Grey/Black|'01 740iL Titanim Silver/Black|'91 K1100RS|'88 K75S