The BMW X3 sDrive20i 170hp (G01/08 - 2017 ->) produces 170bhp and 250Nm in standard form. Our Stage 1 ECU tuning file raises output to 210bhp and 310Nm, a gain of 40bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.