The BMW 3 Series 330D 258hp (F3x - 2011 - 2015) produces 258bhp and 560Nm in standard form. Our Stage 1 ECU tuning file raises output to 300bhp and 650Nm, a gain of 42bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.