The BMW 4 Series 435d 313hp (F32/33 - May/2016 - 2019) produces 313bhp and 630Nm in standard form. Our Stage 1 ECU tuning file raises output to 360bhp and 700Nm, 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.