BMW X3 M and X4 M tuning

BMW X3 M and X4 M remapping in Bristol, Somerset and South Wales

The X3 M and X4 M were the first cars to use BMW's S58 twin-turbo straight-six, and they respond to calibration just as well as the M3 and M4. We come to you from our Weston-super-Mare base, across Bristol, Somerset, Gloucestershire, Wiltshire, South Wales and parts of Devon and Dorset.

BMW X3 M and X4 M generations we tune

Factory figures vary by market and year. We confirm your car's exact ECU and software before quoting.

F97 X3 M and F98 X4 M (2019 on)

S58 3.0 twin-turbo straight-six, 480hp and 600Nm; Competition 510hp. Newer ECUs may need unlocking first.

What a remap does on the X3 M and X4 M

The S58's boost is under software control, so Stage 1 makes a large difference without hardware changes. In a heavier SUV, the extra torque is what you notice most, especially when overtaking or towing.

We keep the factory protections in place and calibrate for repeatable power in all weathers, which matters on an all-wheel-drive car used every day.

Gearbox tuning

Both cars use the ZF 8-speed M Steptronic, which we tune for higher torque limits and quicker shifts to match the engine.

Related BMW pages

Common questions

Is the X3 M engine the same as the M3?

The X3 M and X4 M use the S58, the same engine family as the G80 M3 and G82 M4.

Do you tune the X3 M40i as well?

Yes. The X3 M40i uses the B58 engine and has its own page.

Recent BMW jobs

BMWs we have tuned, with their figures.

Hover over a photo to see the job and its figures.

See all projects

Customer feedback

What customers say on Google

Read all reviews