The Ford Crown Victoria 4.6 V8 239hp (2005 - 2012) produces 239bhp and 382Nm in standard form. Our Stage 1 ECU tuning file raises output to 260bhp and 410Nm, a gain of 21bhp and 28Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.