The Ford F-250 5.4 V8 320hp (upto 2020) produces 320bhp and 529Nm in standard form. Our Stage 1 ECU tuning file raises output to 340bhp and 550Nm, a gain of 20bhp and 21Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.