BMW X4 M40d 340bhp tuning file

With a bespoke remap the BMW X4 M40d 340bhp gains +40 bhp and +50 Nm, rising from 340 bhp / 700 Nm to 380 bhp / 750 Nm (12% more power). We build each tuning file around the software number of your read, so nothing generic goes back into the car. Add DPF / EGR solutions to the same file if needed.

Who is this remap for?

On a diesel, the bigger gain is usually in torque. Expect stronger pulling from low revs, easier overtaking and a more relaxed drive on the motorway. 340 → 380 bhp equals roughly 254 → 283 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.