I will not make many mods to my M2 CS. However, I will be looking to upgrade the exhaust. If you are doing the same, I'd love to hear what you will get and why.
P.S. I know GimmeanM already has a thread on modifications in general, but I thought it would be helpful to have a thread that focuses solely on exhaust, since I know many of us have plans to upgrade.
P.P.S. Post 1000 on BP