The best performance software available for your E46 325 or 330, or E39 525 or 530. (MS43 equipped M54.)
Stage 1 is our performance tune on a stock vehicle.
Stage 2 is a performance tune for catless headers. (For off road use only.)
Stage 3 is a performance tune with catless headers and no rear O2 sensors (For off road use only.)
ECU must be shipped to us for programming. The TRM Flasher/Logger will be available for this application shortly.
We also offer these tunes with EWS and other systems removed so that you can swap this engine into another chassis. For that, see our MS43 Swap Tune.
For CAM tunes, or just to get the most out of your car, we recommend a custom tune.