The Nissan GT-R 3.8 V6 Turbo 485hp (2009 ->) produces 485bhp and 588Nm in standard form. Our Stage 1 ECU tuning file raises output to 550bhp and 720Nm, a gain of 65bhp and 132Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.