Stage 1 Nissan GTR 3.8 V6 ECU File – Hitachi MEC125n/axxx, Software 17SMF9TD3/1F00M4 1F00M4

Change log

  • v1.0 — 2025-06-02
    • Stage 1 torque and ignition calibration
    • Boost and throttle map optimizations
    • Idle and cold start parameters preserved
    • Checksum integrity maintained for safe flashing​

Release notes

  • v1.0 — 2025-06-02
    • Designed for GTR enthusiasts seeking a clean Stage 1 upgrade
    • No emissions equipment disabled — suitable for daily driving
    • Enhanced mid-range response and consistent delivery under load​

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