I have put a 5 inch lift with 37 inch tires on my truck back about 5 months ago after that i went from 19 highway to about 11 and intown from 16ish to 9 everything is still stock so im wondering if this would be normal?...im planing on putting a dft kit and cold air along with a juice this spring would that be a major help?

 

I would say you are going to lose some mileage but that seems kind of extreme but you also have to figure in your winter blend fuel and temps as of right now

 

yeah im hoping to bring it up some with a few mods but i guess ill find out then

 

Do you have any mods as of now? fill out your signature so we know what you have I'll guaranty everyone here is willing to help

spend your money on Mods

 

have you had your speedometer recalibrated for the difference in tire size? a bigger tire will make you think you are getting worse mileage if you hand calculate it and you still have the stock calibration for the stock tire size.

 

Good point That is very true

 

ok i just filled out my signature i think i did it right but i have no mods done to it right now im planing on doing that this spring. id like to do the dpf delete kit with cold air and a juice chip

 

first thing i would either get the dealer to re-flash the computer (if they can) for the tire size or buy a smarty (if they are available for a 6.7 i'm not sure) or any other product that can adjust the speedo for tire size.

 

No smarty out yet. Get the PMT instead of the edge and you can calibrate the tires. A DPF/EGR delete should help you get some of that MPG back.

 

ok thank you ill keep y'all posted and let ya know how i make out