Originally Posted By LOKILOKI:
What is everybody's experience with them? I have one in a 2001 F 150 and haven't had any sort of trouble with it. As far as I know, it should have the issue with the plugs blowing out of the head, but they never have. As for mileage, not impossible. Pretty much anywhere between 12 and 14. Anybody know of any mods that would help out with power and fuel consumption? And yes, I purposely put this in gd for exposure. If you are going to troll, at least TRY to make our entertaining.
I have a 2002 f-150 4x4 with the 5.4 and the only thing I'm not a fan of is the mileage I average around 13.5-14.5 mpg in general driving and top out at 18 mpg on the highway. My 1997 Chevy z-71 would get 16 avg and upto 19 on the highway with the 5.7 / 350 in it. The ford has a 3.55 l/s rear end and the Chevy had a 3.42 l/s. There is a tuner the gryphon I believe that you could have a economy tune loaded and people supposedly were getting a 2ish mpg improvement spending on what other mods they had.