The Mercedes C 180 CDI 120hp (W204 - 2010 - 2014) produces 120bhp and 310Nm in standard form. Our Stage 1 ECU tuning file raises output to 200bhp and 460Nm, a gain of 80bhp and 150Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.