The Mercedes C 180d 122hp (W205 - 2018 - 2021) produces 122bhp and 300Nm in standard form. Our Stage 1 ECU tuning file raises output to 160bhp and 380Nm, a gain of 38bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.