The BMW X6 5.0i 450hp (F16 - 2014 - 2018) produces 450bhp and 650Nm in standard form. Our Stage 1 ECU tuning file raises output to 540bhp and 780Nm, a gain of 90bhp and 130Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.