E85 mpg

[2k5Squirrel]

Thinking of just having my tuner do a straight e85 tune on my truck. Right now I get about 11.5 on e85 and 14.5 on 89. What kind of mileage increase do y'all think i'll get on the e85. Not terribly worried about mpg, if I was I would ride a bicycle. But if I could get 2 mpg, that'd be pretty f'n sweet. We have quite a few e85 stations in the area. Thanks for the input.

[sprayedenali]

i get HORRIBLE mileage... but then again i have a stupid loose converter by most peoples standards and my setup probably uses a little more fuel than most

[phantom405]

You won't gain MPG, that's for sure

[RS/SS 4.8]

Nope no gain using e85 mpg wise.

[gavin05]

i get 8mpg on e85 and 10mpg on 93.thats all city driving tho.

[2k5Squirrel]

So people can gain a few mpg going to a 93 tune, but no gain in mpg with an e85 tune?!

[bangbangskeetskeet]

On e85 you burn more fuel. That's why fuel systems that support 1000hp on 93 will only support 600hp on e85...

[Chris@LSXPS]

burns more fuel, but is almost a dollar cheaper per gallon here in DFW, I dont know if that would equal out or not.

[phantom405]

On a stock engine you will likely lose mpg with e85 because it takes more volume

If you had something like a 13:1+ compression motor then you may maintain or even gain a little mpg. I was getting around 16mpg on 91 with fuel injection. I think I'll get 14-15 when I'm finished tuning this carb on e85

[canada4g63]

Depends on what e85 cost around you it's only about 30cents cheaper so check your prices to see in it's worth the switch.