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Old 04-06-2012, 12:24 PM
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E85 can I do anything to improve fuel mileage?

Are there aftermarket tunes that can better optimise fuel mileage when using E85? I use my JGC 3.6 to commute 80 miles a day over moutainoue terrain into stop and go traffic. So far I have run two tanks of regular gas and averaged about 18.2 MPG and ran two tanks of E85 and averaged about 16.3. E85 really seems to suffer when Im in town or in stop and go traffic. More so than regular fuel.

If I go off trip comupter when Im doing flat highway driving I get about 24 hwy with regular and about 21 with e85.

I can get E85 for about $.50 a gallon less than regular fuel. I like the idea of running Ethonal. Cleaner burning, car runs cooler, energy indipendence, putting money into pockets amrican farmers, etc. Id just like to get a little better mileage. Current tank of e85 Im running closer to 18 MPG but I reall am driving like a little old lady. Trying to coast whenever possible etc. LOL!
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Old 04-06-2012, 02:30 PM
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Re: E85 can I do anything to improve fuel mileage?

No. The very nature of alcohol based fuels is that it requires more fuel to properly complete the combustion process. It will never get the mileage of straight pump gas.
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Old 04-06-2012, 03:03 PM
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Re: E85 can I do anything to improve fuel mileage?

Yeah I know but there must be some custom tunes that will eek a little more for me and not fry the motor. Im surprised my mileage has been so close to regular gas. But then we get crappy gas in California to begin with.
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Old 04-06-2012, 03:18 PM
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Re: E85 can I do anything to improve fuel mileage?

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Originally Posted by Grantsjc View Post
Yeah I know but there must be some custom tunes that will eek a little more for me and not fry the motor. Im surprised my mileage has been so close to regular gas. But then we get crappy gas in California to begin with.
There isnt custom tuning available for the WK2, and no matter how aggressive the tune might be it will never equal gas. Regardless of octane, there is only so much timing you can add to a given engine.
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Old 04-06-2012, 03:26 PM
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What these guys said, it takes 30% more e85 to equal the same power as gasoline. The two pretty much equal out when you do the math, if you were trying to hot rod the truck it would be awesome for that.

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Old 04-06-2012, 03:30 PM
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Re: E85 can I do anything to improve fuel mileage?

I'm sure if somone cracked it there is likely a little more room with AFR and timing but I will live with it.

Im just about even on cost right now. I do like E85 option when oil prices spike as the cost differntial justifies its use. When regular dips below about $4 it doesnt make sense. I have a station thats around $3.65 a gallon right now for e85. I wished I lived closer to that $2.99 a gallon store in Sacramento!

http://e85prices.com/california.html
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Old 04-06-2012, 05:18 PM
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Re: E85 can I do anything to improve fuel mileage?

There is a reason E85 is cheaper than non-E85...it produces less MPG. Just the nature of the beast.

I'd never run that crap through my engine...10% ethanol is bad enough.
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Old 04-06-2012, 05:58 PM
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Re: E85 can I do anything to improve fuel mileage?

Since the Federal and State subsidities in our area lapsed on 1-1-12, the price of E85 is within 10 cents of E10 unleaded (Minnesota has a minimum 10% ethanol content law). Because of this, using E85 is a $ losing proposition. Hopefully, less corn will be used to make ethanol and take some pressure off food costs. Contrary to popular belief, replacing petroleum with ethanol is NOT environmentally sound, due to the amount of energy required for the process.

http://www.startribune.com/business/136838948.html

http://www.technologyreview.com/energy/18173/
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Old 04-06-2012, 07:08 PM
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Quote:
Originally Posted by Justal13 View Post
Contrary to popular belief, replacing petroleum with ethanol is NOT environmentally sound, due to the amount of energy required for the process.
This is mostly true but the reason it is so true is that here in the US were are being forced by the Gov't and farm lobbyists to use corn to make that ethanol. Corn is one of the hardest sources to crack for ethanol. Brazil and other tropical countries use excess cane sugar to make ethanol. In that case it is a cost effective process.

Now, here in the US, we cannot economically grow cane sugar but there are other products that we could use that would be more cost effective but that would leave corn growers out in the cold. Some of those materials are switch grass, seaweed in our coastal areas, even grass clippings!

Another problem is that ethanol has higher taxes on it than petroleum based products here in the US. Those go back over 100 years in an effort by oil lobbyists to get us hooked on petroleum as well as the prohibition era to prevent people from having their own stills for both drinking alcohol and making our own fuel alcohol.
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Old 04-06-2012, 09:31 PM
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Re: E85 can I do anything to improve fuel mileage?

Lol! So many myths and so few facts. Fact is we have plenty of non corn based ethanol plants in US and we will continue to build better higher producing ethanol refineries. Fact subsidies have dropped off and in fact ethanol is being taxed just like petro fuel. Fact ethanol burns cleaner and keeps induction temps lower than Dino juice.

Fact price differential in independent studies show current ethonal prices about 15% less than regular gas. Way more to get gas with same octane ratings! You'd have to buy race gas! Oh wait ethanol is race gas! Lol!

Fact if you look at the entire process of exploring for oil, drilling, transporting, refining and distributing petro it's not as viable as ethanol . Add to this wars caused by oil we need to have from middle east and oil is a real loser. and money for ethanol goes to many more local Americans than foreign drilled oil. Then add to this oil spills and environmental damage and all enemy spent cleaning up spills and I think you get the picture . And $5 a gallon dino fuel prices have no impact on all food costs ...right? Lol! Junk science articles aren't helping anyone in this discussion. Many in oil lobby fund these junk studies. With billions at stake you bet your going to see all sorts of bad press on alternatives. The growth of ethanol has been staggering past 4 years. It's only going to grow and ain't nothing you can do to stop it.

I run nothing but ethanol in my race car and it produces far more hp than pump gas does. While energy content is less it has vey high octane rating.

I wouldn't put crappy regular dino fuel in my sweet Jeep! Nothing but high octane ethanol for me!
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Old 04-06-2012, 09:59 PM
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Re: E85 can I do anything to improve fuel mileage?

[/QUOTE]

I run nothing but ethanol in my race car and it produces far more hp than pump gas does. While energy content is less it has vey high octane rating.

I wouldn't put crappy regular dino fuel in my sweet Jeep! Nothing but high octane ethanol for me![/QUOTE]

How does it produce more HP when the energy content is less?
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Old 04-06-2012, 10:24 PM
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Re: E85 can I do anything to improve fuel mileage?

Advanced the timing and pour a ton of fuel into it.
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