The best performance software available for your S54 engine.
M3 from 2001-2005, MZ3 from 2001-2002, and M coupe from 2001-2002.
ECU can be shipped to us for programming, or flashed remotely with our remote interface. (For remote flashing, Windows PC with internet connection required.)
For any and all modifications to your MSS54/MSS54HP equipped S54 engine.
This includes CSL/CSL replica airboxes, open trumpets, pullies, exhaust, cams, or anything else you can throw at your NA S54.