The BMW X3 2.0D 163hp (E83 - 2004 - 2010) produces 163bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 210bhp and 420Nm, a gain of 47bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.