The Toyota Tundra 5.7L V8 380hp (2015 - 2020) produces 380bhp and 540Nm in standard form. Our Stage 1 ECU tuning file raises output to 410bhp and 600Nm, a gain of 30bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.