The BMW 1 Series 118D 136hp (E87 - 2007 - 2011) produces 136bhp and 300Nm in standard form. Our Stage 1 ECU tuning file raises output to 180bhp and 390Nm, a gain of 44bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.