Stage 1 Tuning File for Mercedes C250 CDI 2.1 (204PS) – Delphi CRD3 ECU (CRD3-651-WMA4HD11) 204WA

Change log

  • v1.0 — 2025-05-25
    • Stage 1 developed for Delphi CRD3 (C250 CDI)
    • Torque curve enhanced for quicker acceleration
    • Boost and fuel delivery fine-tuned
    • Checksum processed using OLS809 v3.03​

Release notes

  • v1.0 — 2025-05-25
    • Full binary tuning for CRD3-651-WMA4HD11
    • Optimised powerband and throttle feel
    • Safe for daily driving — emissions systems untouched
    • Flash-ready with validated checksum​