The Ford E-Seriess 5.4 V8 255hp (2006 - 2014) produces 255bhp and 438Nm in standard form. Our Stage 1 ECU tuning file raises output to 275bhp and 465Nm, a gain of 20bhp and 27Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.