MPG 2006 Expedition wtih 5.4

[Expedition]

Get a Xcal3 and do a custom tune.

 

[Eric]

My 05 with 57,000 miles routinely gets 14 mpg average per tank (calculated by actual gas used and mileage traveled) and I do combo driving roughly 60% city 40% highway. Only mod is a K&N filter. It's getting expensive again, $70 to put 20 gallons in today, that's .25 cents per mile cost on fuel.

 

[GAINMOB]

it also has the return to stock option...it save your stock tune in the programmer...those numbers are hwy numbers...i like in the city and ever 1/4 to 1/2 mile theres a stop light...performance killed my tank so i keep it on gas saver...every now and again i'll go to 87 octane performance...

 

[Sierra Lima1470]

it also has the return to stock option...it save your stock tune in the programmer...those numbers are hwy numbers...i like in the city and ever 1/4 to 1/2 mile theres a stop light...performance killed my tank so i keep it on gas saver...every now and again i'll go to 87 octane performance...

Hampton Highway sure has alot of those. Does the 87 octane reduce the fuel economy even further than the stock tune? Also I went to big Al's Autos today on Jefferson for an oil change and I had them look at the truck regarding unusually poor gas mileage and they said everything came back normal.. so I guess its just me.

 

[GAINMOB]

it will reduce fuel economy...but you gain HP...thats why i normally drive on the gas saver setting...but when i get that fever...i switch it up...like right now...im on the 87 performance...wow...