First off let me say I searched for this, but everything came back concerning E85 tuning, so sorry if this is a re-post.

I have ran E85 several times, I fill up from empty with it and call me crazy but the truck seems to have increased throttle response and overall power. Now my overall millage is cut down by 50+ miles a tank, but it is 20 cents cheaper so it almost balances out. I understand it to have an octane level of 105 so this may have something to do with it, any experts want to explain.....

What are yalls experiences with it? Notice any more power?

 

E85 contains 81800 BTU per U.S. gallon (29% less energy than straight gasoline) vs 114100 BTU for gasoline, so I'm guessing its all in your head.


http://alternativefuels.about.com/od...conomydrop.htm

 

Do a search and see why it does not give the power 100% gas does. I would rather pay MORE for all gasoline than sacrifice my mileage AND power for less. It made my 97 4.2L run like total CRAP! I also here it is terrible for weed eaters, lawn mowers and chainsaws.

By the way I bought all gas no ethanol this weekend $.09 CHEAPER than E85.

 

Could be a number of reasons you feel like it has more power but the primary ones would be these. Ethanol is a good solvent for fuel systems. If your injection system had any varnish or build up in it, the ethanol will remove it and make it run like it was designed. Ethanol also brings oxygen molecules to the combustion chamber and if your engine was running on the rich side with normal gas, the ethanol would cure the problem. So no, it might not be in yer head that it runs better but you might also find out it will run even better when you go back to regular gas since the system is now clean. Octane ratings are the fuels resistance to ignition, not the measure of energy in it.

 

LOL probably so.... any chance the computer could make adjustments for the fuel so that even though its less efficient it can be used in higher volumes and come out ahead??? That would explain my large drop on millage, seriously when I filled up it said 401 miles till empty drove about a mile or so, guess this got the rest of the gas out the fuel line and started pumping in the e85. It then droped to 350 miles till empty almost instantly.

 

The other issue with e85 is that it will destroy your fuel lines if they weren't made for e85. I don't believe our trucks are supposed to run that stuff. I know some of the tauruses were meant to be flex fueled.

 

I believe 06 and up are FFV. My 07 is.

 

Mine 08 is good for it too. Anyone else run it in a vehicle that is designed specifically for it (e85/gas)? Notice any differences good or bad?

 

Yeah, it kills your mileage.

 

My 07 runs OK with it but it is a mileage KILLER! But hey...three cheers for cleaner air!! I'd rather DRINK corn alcohol than burn it in my truck.

 

If you get a custom E85 tune, it will give you more power than 93, and you mileage will increase.

ALSO: How does the thermal BTU's affect power. The engine doesn't use heat to make it's power, and the less heat could actually increase power and cooler engine temps.

 

The gas/air mix has an effect on combustion chamber temps and directly effect power out put.

 

More power and less mileage on a vehicle that's tuned for E-85, versus an identical vehicle that's been tuned for gasoline. (The power gap increases when you apply the fact that you can run higher compression ratios with E-85.) Miles per dollar currently favors gasoline, calculated with a conservative fuel usage difference of only 15%.

 

Yes and that 15% decrease in mileage comes out to a 27 gallon tank only theoretically having 22.95 gallons in it. You are losing 5 gallons of mileage. Correct??

 

OK Help me clarify something for myself. E85 fuel is different than when the pump says, "My contain up to 10% ethanol" right?

I see true E85 is up to 85% corn alcohol. Am I correct on this??