BMW 6 Series | ECU Tunes
BMW 6 Series ECU tunes for the N55 (F12 640i) and S63 (F06/F12 M6) — Stage 1 through Stage 2 calibrations via remote OBD flash and bench tuning. The S63 M6 gains 80–100 WHP from a Stage 1 remap; upgraded turbo setups push past 800 WHP.