You can now fit a sport exhaust system with hiflow cats and no longer get annoying “catalyst insufficient” warnings with our custom M3 V8 ECU tuning. We can also raise the Vehicle V-Max speed limiter for track days.

Good gains were achieved from the M3, and the V8 note at 8000 RPM is exquisite!

Stock ECU Settings 243kW and 538Nm at the wheels

ECUWEST Remap 263kW and 606Nm at the wheels!

BMW M3 4L V8 PETROL MT6 ECU tuned

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