I'm getting around 13 to 14 mpg..What can i do to raise that number?

 

thats actually average city mileage for your truck.
have you had the speedo recalibrated for the 285's, if not your mileage calcs are off.

a custom tune can help, but the only thing that truly regulates mpg is how hard you hit the skinny pedal.

 

i was trying to figure out why i was getting like 8mpg but i put 285s on and never changed the speedo. Thanks^^

 

i have had the speedo recalibrated so that shouldnt be off... i do try and not get on the throttle too hard.. Bad: what kind of mileage do you get with all those mods??

 

I went to the dealer today and had my speedo recalibrated but all they did was the abs. they said i might need to do the ecm too?? it was like $100 for the ecm to be done they did the abs for free.

 

yeah idk what the difference is but i had to pay 90$ and they recalibrated my speedo and adjusted my shift points too

 

If im easy on it, i can squeeze right at 13.8-14 city mmpg out of her. my normal driving i see around 12. the 6.0 will always be a thirsty little B*tch, but she's fun to drive. thats why the ole saturn is usually the daily driver, 30+mpg

i dont think you could justify the cost of the mods for the mpg you get. i did them for performance, and if im easy on it, i get a mpg benefit.

 

i wouldnt pay the dealer $100 for a speedo recal. if you dont have one, get a custom tune, from someone like blackbear performance. $200 he can recal your speedo and give you more power.

 

I get about 12mpg regularly. I only get 14 on a long trip crusing at 75 or so. Keep in mind those tires, 285/75 R16, are a lot heavier than the stockers. They will lower your gas milage just because they take more power to turn.

 

man, i wish i could get 14mpg out of my 8.1, but then again i am knockin on the 500hp door w/ 8" of lift. the thing about it is, once you start to lift and get larger tires, you can just kiss that gas mileage goodbye. just remember there is always someone out there that gets worse mileage than you, and its most likely going to be me, haha.