Selling my Burger Motorsports Catless Downpipe for the N55 engine. This is easily one of the simplest and most satisfying mods you can have. Provides great sound, average gains of 15-20 hp, and less turbo lag. Amazing condition, just as good as when I first bought it brand new.
I also have a carbon fiber diffuser listed in another thread. If interested see here:
http://www.e90post.com/forums/showth...3#post16250293