The BMW 5 Series 550i 407hp (F10/11 - 2010 - 2016) produces 407bhp and 600Nm in standard form. Our Stage 1 ECU tuning file raises output to 470bhp and 700Nm, a gain of 63bhp and 100Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.