Exhaust is personal pref'
Think of it as a straw, they're all different colors and sizes and one may make a different noise when you blow through it. But which do you like better? Can't go wrong w/t Eisenmannzzzz..!
2008 M3 Sedan + TestPipes + Tune [sold]
2012 CLS63 AMG + P30 Performance Package
2014 M6 Coupe + AMS Downpipes + KW V3