i can do the same if i press reset and coast without pressing the gas... ill be the skeptical one.

 

Even with my lift if I press reset while coasting I can get it to read over 50mpg lol

 

Mine numbers weren't calculated with the trucks' computer, but the truck seems to be about .5-.7 higher than my manual calculation.

 

with my leveling kit, tires and drop in K&N.. I get 21-23 on highway trips. usually at 70-75 Checked it going back n forth to Corpus Christi, and on our trip to Vegas and LA.. Manual calculations

 

It was on my trip to work from west palm to hollywood. So about 50 miles.

 

that exact same drive, cruise set at 75mph, i get 14.8. But then again, 5.4, 4x4, 33"x12.8".

well, i was exaggerating a little, point is... no matter what my mpg blows.

 

That's what my gauge looks like, only the numbers are different.

 

Im not sure man, a leveling kit and 33" tires shouldnt be killing your mpg that much. Thats basically the only difference i see in our trucks.

 

well, fwiw, my grandfather with the same truck (05, 5.4, 4x4, stock tire size and a bedcap) gets the exact same gas mileage as me, as does my buddy with a lifted 06.

 

I cant be bothered to look at the MPG anymore. I have a lariat too. I just change the option on the info center to keep it blank. Ha. If I dont it usually says 9...maybe 10.

 

At 65 on flat ground with an empty bed I can get 21 on the highway. My truck is a bone stock 06 Super cab xlt 2wd

 

thats weird, my dad has a bone stock 08 SCAB 5.4 4x4 that i took down to FL one time. granted, i was doing 75-85 the whole time but no stop and go and it read 14.7 for the trip...

 

Thats the same Lariat cluster since 04.
When it was stock my 5.4 3v would get +20 mpg on flat roads up to 70 mph.

Below 70 mph tires (33 in) and wheels (20's) dragged my mileage down to 18 highway, 14 city and im at 120K. Heavy foot, over 70 mph or around town it drops fast and ugly.