The BMW 7 Series 745i 333hp (E65 - 2002 - 2008) produces 333bhp and 450Nm in standard form. Our Stage 1 ECU tuning file raises output to 353bhp and 470Nm, a gain of 20bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.