Cooper S Clubman
B48 / B46 (US)

The crank targets are identical, and the map is written knowing which drivetrain the car has. ALL4 costs a little more through drivetrain loss at the wheels, but it repays you in how cleanly the tuned torque reaches the road — a Stage 1 ALL4 Clubman launches without the front-axle scramble a powerful front-wheel-drive car can show.

245–260 bhp and 360–400 Nm, up from a factory 189–192 bhp and 280 Nm, with nothing bolted on. For a car this shape the torque matters more than the peak — four-up with the boot full, the tuned Clubman simply stops noticing the load.

Three supporting parts: an uprated intercooler, a decat or sports cat, and a performance intake, with cooler plugs recommended. That combination keeps charge temperatures under control and lets the standard turbo hold 270–285 bhp and 420–460 Nm reliably. Send Samuel your parts list and the calibration is matched to it exactly.

Around 400 bhp is the realistic ceiling for this platform, but it is a build rather than a flash — the Cooper S pistons are the weak point beyond Stage 2, so forged internals and a larger or hybrid turbo come first. Samuel consults on the full spec over WhatsApp before anything is quoted.

If a dealer can tie a specific failure to the software, a warranty claim can be refused, so treat it as a considered decision. In practice Samuel calibrates well inside the B48's hardware limits, and because the Clubman can be returned to its stock file before any service visit, plenty of owners run tuned throughout ownership.