The BMW 3 Series 318D 115hp (E46 - 1998 - 2005) produces 115bhp and 280Nm in standard form. Our Stage 1 ECU tuning file raises output to 145bhp and 330Nm, a gain of 30bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.