The BMW 5 Series M550I 462hp (G30/31 - 2016 - 2019) produces 462bhp and 650Nm in standard form. Our Stage 1 ECU tuning file raises output to 540bhp and 780Nm, a gain of 78bhp and 130Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.