Stage 2 BMW 428i N26B20O0 ECU Firmware – MEVD17.2.9 540090 (Pop&Bang + Decat + Vmax OFF) 540090

Change log

  • v1.0 — 2025-05-29
    • Stage 2 tuning for N26B20O0 / MEVD17.2.9
    • Decat calibration and Vmax OFF
    • Pop&Bang logic for dynamic modes
    • No checksum applied
    • Delivered as complete binary + original​

Release notes

  • v1.0 — 2025-05-29
    • Ideal for builds with downpipe/exhaust upgrades
    • Aggressive exhaust note with Pop&Bang in Sport mode
    • Calibrated for stable high-performance use on or off track​
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