The Mercedes B 180 CDI 109hp (W245 - 2005 - 2011) produces 109bhp and 250Nm in standard form. Our Stage 1 ECU tuning file raises output to 170bhp and 360Nm, a gain of 61bhp and 110Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.