The BMW 3 Series 330e 252hp (G2x - 2019 ->) produces 252bhp and 420Nm in standard form. Our Stage 1 ECU tuning file raises output to 340bhp and 540Nm, a gain of 88bhp and 120Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.