X6M (F96)
S63

That is the point of the calibration. Light-throttle manners, cold starts and cruising stay factory-normal, and the difference only appears when you open the throttle, where 680 bhp and 850 Nm replace the standard 617 and 750. The map adds output without rewriting the car's daily character.

The F96's all-wheel-drive hardware was engineered around enormous torque from the start, and Stage 2's 900 Nm is delivered in a curve calibrated to work with it, not against it. Downpipes and intakes are the only parts required at that level; the transmission and transfer case stay standard.

Hybrid turbochargers first, running bespoke calibrations at 1,000-plus bhp depending on spec, then full big-turbo conversions with port injection and supporting fuelling, which is where the F96 platform's roughly 1,200 bhp limit lives. Every build past Stage 2 is mapped around its exact parts list, submitted with your order.

At any time. The unmodified calibration is preserved before your first flash, and writing it back through the OBD port restores the F96 to delivery condition. The one-time unlock of the car's two DMEs stays in place harmlessly; it simply means the car remains able to accept files in future.

Usually within a day or two. Samuel turns the calibrated file around inside 24 hours of receiving your build details, it lands in your BM3, MHD or MG Flasher account, and the flash itself is a short driveway job through the OBD port. No transporter, no workshop booking, no waiting list.