TERRIBLE MILEAGE

[strokingirl]

Hello All,
This is my first time so bear with me..... I have an '03 F350 w/ 6.0, magnaflow exhaust and air intake w/ a DiabloSport Tuner. Was really hoping the tuner would up my mileage but I am steady at about 10mpg. It SUCKS any suggestions?????

[thenubsterman]

10? do you have a heavy foot? is it lifted? Big tires? what kind of driving are you doing? short drives or longer?

[dxusmc]

wow, that is pretty terrible lol. I'm sitting with 6" lift and 37s and mine isn't even that low. Then again I'm running stock exhaust and no tuner..but do Have KN air intake.

[GoFastPadre]

Originally Posted by strokingirl

Hello All,
This is my first time so bear with me..... I have an '03 F350 w/ 6.0, magnaflow exhaust and air intake w/ a DiabloSport Tuner. Was really hoping the tuner would up my mileage but I am steady at about 10mpg. It SUCKS any suggestions?????

Welcome to the Addiction um I mean Org! I am not saying the tuner you have is junk, so don't take this wrong............ anybody cause I ain't bashin' I would sell the DiabloSport Tuner and get your self an SCT with Custom Tunes from Innovative Diesel or Eliete Diesel. There are also Chips burned by Tony Wildman, DP Tuner, Power Hungry Performance and the like. If you do some looking around the board you will find most members will say they get the best mileage out of the street tunes, far more than can be achieved with the economy tunes or any tuner you can buy with canned tunes. Again Welcome and have fun!

[TommyBoy#1]

thats horrible read my sig i get 12 in town with a heavy foot. Does it smoke alot?

[strokingirl]

no smoke at all, have a 4" lift and 35's, not too heavy of a foot and 10 is bout the same for in town and highway.

check fuel filter, and also check for boost or exhaust leaks

[strokingirl]

replaced both fuel filters, drained water separator, no boost or exhaust leaks

i guess its time to put it on a scanner (a good one) and check to see what is going on

[Snake]

Is 10 mpg hand calculated?

--Snake