The BMW 3 Series GT 335d 313hp (F34 LCI - 2016 ->) 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.