The BMW 5 Series 530D 184hp (E39 - 1995 - 2003) produces 184bhp and 390Nm in standard form. Our Stage 1 ECU tuning file raises output to 220bhp and 480Nm, a gain of 36bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.