spartin millage how u doing?

[mattyl]

I have been running the 250 tune now for about 5 months and have been noticing the millage getting better i get on an average of 14 with my 4500 lbs box trail on it and I just went through a hole tank or most of a tank with no trailer and got 595 miles out of 33 gallons of fule.. not the worlds best but damm good for a f350 dually 4x4 i am happy ... is anyone else getting this good or better and if better what else have you done?

[jac97psd]

I'm also running a 250 tune and with a 400 pound tommy lift and couple hundred pounds of parts in my tool box in the bed I'm getting about 20 or so mpg per fill up. I'm figuring around 22-23 mpg on the hwy. I'm getting about 700 miles or little more out of 38 gallons. I usually have 2-3 gallons to spare everytime I fill up. Oh diesel around is 2.69.

[Funyun]

Are you guys on stock tires?I get like 12.5mpg cdriving to and from work, and pulling a small trailer with 2 quads i only got 14mpg. Are you hand calculattiong your mileage or going off the dash?

[FukeneH]

pulling 8k trailer and rockies got 565km to 92 litres reg 210. 210 empty driving 70 to 75mph hwy 92 to 96 litres 825 to 837 km. stock empty before spartan 92 to 96 litres 420km to 450km

[Robertc82]

I have 12000 miles on my truck and it has had its lift, tires and spartan since 200 miles. Mileage does seem to be getting a little better, but I have still never seen over 14 mpg hand calculated, all highway, driving 60-70 but never over 70 mph. It's much better than the 10-12 I was getting out of my 08 and 09 though.

[BIGBLUE08]

I Drove down to Myrtle Beach Sc Friday and i used the 310 low response and hand calculated i got 17.77 mpg that is with the crusie set between 70 and 75 the whole time i wass tickled to death but iim tryin to decide what tune to drive back and see if i get any better 275 or 250?

[08stroker250]

Try the 275 tune, I have always gotten my best results out of that tune.

[jac97psd]

Originally Posted by Funyun

Are you guys on stock tires?I get like 12.5mpg cdriving to and from work, and pulling a small trailer with 2 quads i only got 14mpg. Are you hand calculattiong your mileage or going off the dash?

I have goodyear duratrac tires 295-65-18. I mostly do hwy driving and cruise around 65 which puts my boost around 5-6 psi. That is the key about getting good fuel mileage is low psi.

[08stroker250]

Originally Posted by jac97psd

I have goodyear duratrac tires 295-65-18. I mostly do hwy driving and cruise around 65 which puts my boost around 5-6 psi. That is the key about getting good fuel mileage is low psi.

Are you compensating for the tire size difference while calculating? I would say that a 295/65 is taller than stock height tires. It will throw your speedo and odometer off.

[jac97psd]

Originally Posted by 08stroker250

Are you compensating for the tire size difference while calculating? I would say that a 295/65 is taller than stock height tires. It will throw your speedo and odometer off.

The stock size was 33 inches and so are these. So I don't think my speedo is off. Plus I always reset my trip meter and just do the math when I fill up. I usually get 20 mpg per fill up so with the little city driving I do I figure I get 22-24 mpg on the hwy. It's amazing how if you keep the boost down how much better mpg you get.