Stage 2 BMW 140i F20 B58 ECU File – MG1 R1C9J8B3B (CAT OFF, Vmax OFF, Sport Display) 9J8

Change log

  • v1.0 — 2025-06-01
    • Stage 2 calibration created for MG1 on B58 engine
    • CAT OFF, Vmax delete and Sport Display enabled
    • Fully tested using Auto Tuner OBD interface
    • Delivered with original for safe restore​

Release notes

  • v1.0 — 2025-06-01
    • Intended for performance upgrades with aftermarket exhaust
    • Provides full power access and visual display feedback
    • Not certified for street use — for closed course or competition only​

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