The BMW X3 30e 252hp (G01/08 - 2017 ->) produces 252bhp and 420Nm in standard form. Our Stage 1 ECU tuning file raises output to 340bhp and 550Nm, a gain of 88bhp and 130Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.