Stage 2 Renault Megane 3 RS Stage 2 — SW RD9A197000000 (EMS3xxx) ARD9970RD99

Change log

  • v1.0 — 2025-05-23
    • Initial Stage 2 calibration for Siemens EMS3xxx
    • Boost, fuel & limiter maps refined
    • Checksum correction & CVN patch applied
    • Flash verified via Alientech Kess V2​

Release notes

  • v1.0 — 2025-05-23
    • First public release — tested on stock 2010 Mégane III RS 250 PS
    • Package includes full binary and WinOLS project notes
    • Recommended tools: Kess V2, CMDFlash, Autotuner (EMS3xxx)​

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