Stage 3 Fiesta 1.6T | MED17 Bosch 12A650 | 539039 Hybrid Turbo C1BY

Change log

  • v1.0 — 2025-07-28
    • Initial release of the Stage 3 hybrid turbo calibration for the Fiesta ST (MED17.2.2).
    • A comprehensive recalibration of all maps for a full hardware upgrade setup.

Release notes

  • v1.0 — 2025-07-28
    • Package includes Original + Stage 3 binaries
    • Confirm ECU numbers (Prod: C1BY-12A650-AD, ECU: C1BY-12A650-DA) before flashing.
    IMPORTANT: Requires significant hardware upgrades (hybrid turbo, full exhaust, intercooler, intake, etc.). This file MUST NOT be used on a stock or Stage 1/2 car.
    • Designed for a mechanically modified vehicle; high-octane fuel required.
    • For off-road or competition use ONLY.​
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