BMW X4 G02 M40i ECU File – MG1CS003 / R0C9J8B2BCGPX1 (CAT OFF, Vmax, Sport Display) J8B2BC Stage 2 

Change log

  • v1.0 — 2025-06-02
    • Initial Stage 2 calibration for B58 G02
    • CAT monitoring deleted
    • VMAX limiter fully off
    • Sport Display activated
    • Exported full binary with original​

Release notes

  • v1.0 — 2025-06-02
    • Developed for off-road/track use
    • Built on B58 MG1CS003 architecture
    • Flash-ready via FEMTO tools
    • Enhanced performance and OEM-like smoothness​