Unlock a crisper throttle and stronger mid-range in your 2010 Renault Mégane III RS (250 PS) with this Stage 2 calibration for the Siemens/Continental EMS3xxx ECU.
The file is supplied as a full Kess V2 bench read and fully checksum-corrected; simply flash with any EMS3-capable tool. Developed for owners running free-flow intake/exhaust hardware who still want OEM reliability for daily use. For competition/off-road use only — verify local regulations before installation.