The BMW 7 Series 745D 300hp (E65 - 2002 - 2008) produces 300bhp and 700Nm in standard form. Our Stage 1 ECU tuning file raises output to 340bhp and 800Nm, a gain of 40bhp and 100Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.