BMW 3 serie M3 420bhp tuning file

With a bespoke remap the BMW 3 serie M3 420bhp gains +20 bhp and +30 Nm, rising from 420 bhp / 400 Nm to 440 bhp / 430 Nm (5% more power). We build each tuning file around the software number of your read on the Siemens/Continental MSS60, so nothing generic goes back into the car. Add DECAT, DTC Removal, FLAPS, Pop & Bang Crackle map to the same file if needed.

Who is this remap for?

On a turbo petrol, a remap sharpens throttle response and pulls harder through the mid-range. For the best result we recommend running it on super unleaded (97–99 RON). 420 → 440 bhp equals roughly 313 → 328 kW.

Figures are guide values from our rolling road and comparable vehicles. Results depend on the vehicle's condition, hardware and fuel quality. Remapping in the UK: let your insurer know about the modification. DPF, EGR and AdBlue solutions are supplied for off-road and motorsport use only and are not legal for use on UK roads.