The BMW 5 Series M550I 530hp (G30/31 - 2016 - 2019) produces 530bhp and 750Nm in standard form. Our Stage 1 ECU tuning file raises output to 650bhp and 880Nm, a gain of 120bhp and 130Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.