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 CAM tunes, or just to get the most out of your car, we recommend a custom tune.