Originally Posted by benzy89
Exhaust, go with the BMW PE. It's an axle-back exhaust but will give you a great change in the sound, allows you to continue to use manufacturer quality parts & remain compliant with CA laws. There are a couple other axle-backs you could consider like the Akrapovic Slip-On, Billy Boat, Eisenmann, Remus, Rogue Engineering and UUC/Corsa
Sorry, can you give me a link to the BMW PE? I'm having a hard time pinning it down since it keeps taking me to performance aftermarket exhausts.
Thanks for a lot of good info, though! Corsa probably sounds the best to me, but I don't see any claims to increase power. I don't think it'll be worth it to me to get it just for the sound (at least before the car is paid off completely).