The BMW 7 Series 730i 258hp (E65 - 2002 - 2008) produces 258bhp and 300Nm in standard form. Our Stage 1 ECU tuning file raises output to 272bhp and 320Nm, a gain of 14bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.