The BMW 6 Series 640D 313hp (F12/F13 - 2011 - 2016) produces 313bhp and 630Nm in standard form. Our Stage 1 ECU tuning file raises output to 365bhp and 730Nm, a gain of 52bhp and 100Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.