Active Autowerke is a great option for supercharging any E9x M3, we have alot of experience with their company and their kits, if anyone has any questions or have interest in ordering please feel free to email me, and I will do my best to answer any questions you may have!
Andrew@lutzperfauto.net
Two options for E9x M3's
-Active Autowerke stage 1
-Active Autowerke stage 2