The Mercedes B 180 CDI (1800cc) 109hp (W246 - 2014 - 2018) produces 109bhp and 250Nm in standard form. Our Stage 1 ECU tuning file raises output to 165bhp and 380Nm, a gain of 56bhp and 130Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.