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What kind of gas mileage are getting on E-85?

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Old Jul 8, 2008 | 08:46 PM
  #46  
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Originally Posted by Jim in Tucson
Someone please correct me if I'm wrong here...

It is my understanding that when running gasoline and you live in an area that adds Ethanol in the winter (i.e. E10), the best thing is to get your car tuned in the winter that way the tune is always safe in the summer.

Conversely, when running E85 and you live in an area that adds gasoline in the winter (i.e. E70), the best thing is to get your car tuned in the summer that way the tune is always safe in the winter.

Obviously getting tuned monthly would also work, but cost a lot more.

Had the car initially tuned on the Spring blend. Picks up power in the Summer, loses some in the Winter. We monitor the car and pull logs year round, so far the ecu can compensate for the ethanol content changes safely.

Last edited by TalonFiero; Jul 8, 2008 at 09:00 PM.
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Old Jul 8, 2008 | 08:50 PM
  #47  
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I get 24mpg combined running 93 oct.
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Old Jul 9, 2008 | 10:35 AM
  #48  
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Originally Posted by oldevodude
You need more fuel delivery and bigger injectors

Short answer=yes

Ok so I guess I need upgrade my injector first b4 I even try. Thanks dude.
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Old Jul 9, 2008 | 10:39 AM
  #49  
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Originally Posted by Jim in Tucson
It's not a stupid question.

Your answer is: yes. You do need a tune.
1. Injector size needs to be upgraded by approx 30% minimum.
2. The ECU needs to be re-calibrated to make the best use of the 105 octane fuel.


So its probably not even worth converting e85 gas if I have to replace injector and get it tune just to increase a little bit on my gas mileage. Oh well thanks anyway
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Old Jul 9, 2008 | 10:43 AM
  #50  
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Originally Posted by Shammy
So its probably not even worth converting e85 gas if I have to replace injector and get it tune just to increase a little bit on my gas mileage. Oh well thanks anyway
You'll also need a fuel pump. In the long term, it can pay to use E85 over gasoline, especially once gas prices start rising past $5.50/gal (its coming).
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Old Jul 9, 2008 | 12:12 PM
  #51  
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Even if you do not feel the extra MPG is worth it the extra power will be.
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Old Jul 9, 2008 | 12:25 PM
  #52  
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Your guys E85 prices must be way better than they are here in Ohio if you think you're saving money by switching from 93 octane gas?

E85 is around $3.49-$3.55gal vs 93 octane at $4.00gal here so it certainly isn't saving us any money.
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Old Jul 9, 2008 | 01:09 PM
  #53  
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From: Flyover country.
Regular unleaded averages at $4.11 nationwide and you guys have premium at $4.00 in Ohio? Not bad.
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Old Jul 9, 2008 | 01:47 PM
  #54  
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From: USA
Central IL 93=$4.29 and E85 = $3.29
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Old Jul 9, 2008 | 04:23 PM
  #55  
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Originally Posted by mplspilot
Regular unleaded averages at $4.11 nationwide and you guys have premium at $4.00 in Ohio? Not bad.
Sorry, I meant to type $4.25 for 93. So that roughly puts me about $.30 more/gallon to run E85 at $3.49
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Old Jul 10, 2008 | 09:29 AM
  #56  
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From: MN
Our e85 prices in Minnesota have been around $0.95 cheaper than 92, it may even be a $1 less now. The more the price of gas goes up, the cheaper e85 becomes when compared to 92.

Last summer I saved about $0.60 a gallon on e85 compared to 92 for a comparison.
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Old Jul 10, 2008 | 11:04 AM
  #57  
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I'm assuming the flooding in the midwest wiping out a lot of the corn crops isn't helping E85 prices. I'm sure the spread between regular gasoline and E85 has tightened up a bit since the flooding...
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Old Jul 10, 2008 | 12:58 PM
  #58  
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Our prices in central WI are about 3.30 for e85 4.25 93 when i did the math a month ago even with the 5 mpg i lose its pretty much a wash , except for the 30-40 horse you can gain.

Last edited by getsideways; Jul 10, 2008 at 01:21 PM. Reason: spelling
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Old Jul 11, 2008 | 01:57 PM
  #59  
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Originally Posted by Shammy
Ok so I guess I need upgrade my injector first b4 I even try. Thanks dude.
Don't forget fuel pump as well. I am running 1000 cc injectors and walbro 255 along with self tuning
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Old Jul 11, 2008 | 01:59 PM
  #60  
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Originally Posted by mike 99gsx
Your guys E85 prices must be way better than they are here in Ohio if you think you're saving money by switching from 93 octane gas?

E85 is around $3.49-$3.55gal vs 93 octane at $4.00gal here so it certainly isn't saving us any money.

91 octane here in Cali. is $4.71 right now and E85 is $3.79 Considering the extra volume of e85 required and the fact I can't keep my foot out of it, It costs me slightly more money but WAAAAY worth it IMO
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