Tuned firmware for the BMW 428i Sedan (N26B20O0 engine, 2014) with Bosch MEVD17.2.9 ECU and software ID 540090. This complete binary includes Stage 2 calibration with removed top-speed limiter (Vmax OFF), decat logic (no post-cat lambda), and Pop&Bang in Sport mode. Developed for dynamic petrol builds with upgraded exhaust and full off-road freedom.