The BMW X1 1.8D 143hp (E84 - 2009 - 2012) produces 143bhp and 300Nm in standard form. Our Stage 1 ECU tuning file raises output to 180bhp and 390Nm, a gain of 37bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.