X6M (F16)
S63

Samuel starts with the X6 M's MEVD17.2.G DME — its specific calibration, your fuel grade, and the hardware sheet you submit. The F86 X6 M runs the same first-generation S63 4.4-litre twin-turbo V8 as the F85 X5 M and F10 M5 — same MEVD17.2.G DME, same hardware ceiling. Before any map work begins, the dual-ECU S63 architecture requires a one-time unlock; after that the car flashes over OBD normally. Stage 1 targets 650 bhp / 850 Nm from the 567 bhp / 750 Nm factory baseline — no hardware changes beyond the ECU unlock. Stage 2 is calibrated around downpipes and intakes, targeting 720 bhp / 900 Nm. Stage 3 is bespoke, built around the hybrid or big-turbo spec you submit. The X6 M's lower roofline and tighter rear geometry give the exhaust a different acoustic character than the X5 M at Stage 2 — the calibration is the same, the car is different. Every file hand-calibrated and reviewed against data logs before sign-off.

The F86 X6 M (2014–2019) is the coupe-SUV companion to the F85 X5 M — same first-generation S63 V8, same MEVD17.2.G DME, coupe rear roofline and slightly different exhaust routing. M xDrive standard, 8-speed ZF automatic. The dual-ECU unlock is required before any map work. Samuel calibrates the F86 X6 M to the same standard as the F85 X5 M; the file is then reviewed against the specific car's logs, accounting for the coupe body's slightly different airflow and exhaust geometry. xHP gearbox calibration is available as an add-on and is strongly recommended at Stage 2 and above.