New member of the SCrew club here. Purchased a used 05 FX4, 5.4 with only 34k on it two weeks ago. Did some traveling this past week and was wondering what some of you other guys are getting on your gas mileage. My truck does have a 2.5" leveling kit and 275/70R18 MTZ. Other than a K&N filter, the truck is stock...to my knowledge. I'll have to say the mileage isn't great by no means, though I wasn't expecting it to be as good as my charged 2wd truck. The best I could get is 14.7 and that's Highway @ 70-73 MPH. 11.5 - 12-5 around town.
Let me know what your getting please. Modded trucks are welcome, just let me know what your mod is. I know E-fans increase mpg because it did on my 03. I'd like to here from the X-Cal, exhaust, etc. increases (if any) also.

Thanks fellows,

 

i get around 17-19 on the highway havent paid much attention around town cause its never good. i get around 430-440 miles on a tank of fuel

 

About 15 overall. 13 to 14 in the city; around 16 highway. Mods below

 

I did the speed limit once and got 20. Mostly I get around 17 at 75 - 85.

 

around 12 in the city, 15-16 on the highway. edge programmer on lever 3 on the interstate and i run level 2 when im n the city. 33" goodyear duratrac's

 

14 around town, 16 if lucky on highway, 2007 screw 4x4 gott's mod and running edge on level 2.

 

City driving I get anywhere from 14 to 15.5 depending on what type of gas and how I drive. 5.4 03 Screw. The MPG will be better with the 4.6 and lesser with the 5.4.

 

I have an 07 with 33's went to a True Flo air system and get maybe 17 with good gas..lol

 

Thanks for all the replies! Looks like I'm about average then. So did you guys see a MPG gain with a tuner and exhaust. It would only make sense if the motor didn't have to work as hard to pull that heavy a** truck.

 

13.7 according to the dash read out

 

i got 13 mpg average with most of my driving city stock with my lvl and 33s now with my Edge i see an average of 16mpg again with most of my driving city oh i have a 4.6

 

man,i must drive rough then..I'm lucky to see 12 on a good day.I have 33" hankook mud terrains,full exhaust manifold back with hi flow cats and muffler with k&n and edge evo on level 3 with 3.55 ls 5.4!

 

If I drive 60 on the highway, I get 19. All city driving I get about 14.5. Only performance-related mod I have is flowmaster exhaust, and I'm wondering if it's hurting more than helping.

07 SCREW 5.4 3.55 stock 20's

 

I get 20 on the highway and 16-17 in town and that's having to use that 10% ethanol crap. I've got the 4.6 2007 SCrew.

 

with underdrive pullies, Edge on level 3 with +2.00 degrees timing for 93 octain fuel. P.E. torneau cover, Roush offroad cat back, and Roush CAI. plus a size 11 chipewa logger. I average around 14. mpg . I cruise 85 highway but a short commute. When on backroads 35-45mph limit. and I drive conservatively I can get it up to around 15mpg. The warmer I get it the better milage I seem to get. sometimes shutting off the overdrive when not needed helps . Im wondering what the best RPM range is to get the best milage.