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i have a 04 F250 with the 5.4 what do u think is the best one to get for my truck i going to put 35's on it not going any bigger does it make a diff. i would like a lil more pep or are they not worth all the money and what else could i do to spunk in up a lil O and i have 3.73 gears.
I have the Diablosport Predator on my 2005 5.4L 3V and it has improved my performance. Lots of tunable perameters to play with. I now run premium fuel 100% of the time. Provides better results with an intake and an exhaust.
Also are very good reviews here for SCT XCal tuners.
I would think these two would be about the best, but for real gains, the truck needs to breathe better, so plan on an intake and a better exhaust to go with the tuner.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.