The BMW X3 M 3.0 xDrive Steptronic 480hp (2019 ->) produces 480bhp and 600Nm in standard form. Our Stage 1 ECU tuning file raises output to 575bhp and 800Nm, a gain of 95bhp and 200Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.