The BMW X3 3.0D 245hp (F25 - 2011 - 2017) produces 245bhp and 540Nm in standard form. Our Stage 1 ECU tuning file raises output to 300bhp and 620Nm, a gain of 55bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.