The Mercedes B 200 CDI 136/140hp (W245 - 2005 - 2011) produces 140bhp and 300Nm in standard form. Our Stage 1 ECU tuning file raises output to 170bhp and 360Nm, a gain of 30bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.