Originally Posted by 4corners
What about a 4.10 differential like the Dinan? It's cheaper than an exhaust.
That will probably be the first and only mod that I will do. Been down the sc path on my previous car so I want to stay NA. Seems to me most of the bolt on mods dont provide the bang for buck that a shorter ratio will do to acceleration. HP is for dyno queens, the real test of a mod is increased acceleration.
2010 Silverstone II E90 M3 Competition Pack M-DCT Sedan
BBS LM-R 19x9.5 ET32 & 19x11 ET25, TMS 12.5mm Front Spacers, Michelin PSS 255/35/19 & 295/30/19, aFe Pro5R Air Filter, ACM Test Pipes, BPM Stage II Performance Software, BPM DCT Software, BPM Feature Coding, BPM Combox, LUX H8 Angel Eyes, Matte Black Front Grill, H&R Sport Springs.