The BMW 1 Series 120D 177hp (E87 - 2007 - 2011) produces 177bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 215bhp and 420Nm, a gain of 38bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.