Stage 1 Opel Astra K 1.4 Turbo Stage 1 ECU File – ACDelco 12679663 (125PS, G16032) 12679668

Change log

  • v1.0 — 2025-05-25
    • Stage 1 tune built on 12679663 calibration
    • Boost control and fuel trims improved
    • Optimised for smoother and stronger midrange
    • CS checked using OLS810​

Release notes

  • v1.0 — 2025-05-25
    • Flash-ready tuning for Astra K 1.4T 125PS
    • Better torque delivery and pedal progression
    • Clean checksum, includes original
    • Built for ACDelco ECUs (Delco5)​

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