The Mercedes C 200 CDI 136hp (W204 - 2010 - 2014) produces 136bhp and 360Nm in standard form. Our Stage 1 ECU tuning file raises output to 200bhp and 450Nm, a gain of 64bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.