TRM MS43 Performance Software


SKU: 030-43 Categories: , , ,


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 can be shipped to us for programming or we can use the TRM Flashing Tool to flash your Car/ECU remotely if you have a KDCAN cable. A flashed ECU is also available if you select “buy an ecu”, though subject to availability. Email first if you would like an ECU provided to inquire about timeline for shipping.

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.

Additional information

Weight .5 lbs
Dimensions 8 × 6 × 2 in







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Remote Flash, Send in my own

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