The Mercedes C 200 CDI (2100cc) 136hp (W205 - 2014 - 2018) produces 136bhp and 360Nm in standard form. Our Stage 1 ECU tuning file raises output to 210bhp and 500Nm, a gain of 74bhp and 140Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.