The Nissan GT-R 3.8 V6 Turbo 550hp (2009 ->) produces 550bhp and 630Nm in standard form. Our Stage 1 ECU tuning file raises output to 600bhp and 770Nm, a gain of 50bhp and 140Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.