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Discussion Starter #1
Ive been noticing a lot of high powered mustang are using e 85. Why e 85 and not 93 octane? Where do you even buy e 85?


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Discussion Starter #6
Can't find e85 here. How is it priced compared to 87?


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I head its cheaper but the mpg is a lot worse so basically it will cost more. Im texas gas is cheap, 93 oct is like 2.70 and 2.30 for 87 and going back down

Texas Rider
 

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I bought e85 down south just because, don't remember the price comparison but it did noticeably burn quicker.


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E85 is a subsidized fuel so it is a little less expensive than premium pump gasoline.
The performance advantage to using it, is much like using straight alcohol. It has an excellent cooling effect inside of the combustion chambers due to the fact that you are using a considerably larger amount of the E85 to do the same amount of work that would be required if the engine was running on gasoline. This allows you to increase the compression ratio on a Normally Aspirated engine or, to increase the boost on a Forced Induction engine, and run a more aggressive ignition timing curve. With none of the negative effects that you would see if using pump gasoline... With the exception of increased fuel consumption.

It's a neat fuel for certain applications! Although, it would be much more expensive if it weren't being government subsidized.
It's basically a "poor man's" racing fuel. Before E85, aviation fuel was the next best alternative to racing fuel. But it also has a little lead in it.

I live in a place where the nearest E85 pump is more than 60 miles away. It would be impossible to run my Mustang, on E85, on the street, due to the availability.
 

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I can get leaded 110 race fuel here $7 a gallon. I do add a lil when I'm feeling frisky. Love the way it smells burning. But it would be cool to see e85 here as well.


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Discussion Starter #11
E85 is a subsidized fuel so it is a little less expensive than premium pump gasoline.
The performance advantage to using it, is much like using straight alcohol. It has an excellent cooling effect inside of the combustion chambers due to the fact that you are using a considerably larger amount of the E85 to do the same amount of work that would be required if the engine was running on gasoline. This allows you to increase the compression ratio on a Normally Aspirated engine or, to increase the boost on a Forced Induction engine, and run a more aggressive ignition timing curve. With none of the negative effects that you would see if using pump gasoline... With the exception of increased fuel consumption.

It's a neat fuel for certain applications! Although, it would be much more expensive if it weren't being government subsidized.
It's basically a "poor man's" racing fuel. Before E85, aviation fuel was the next best alternative to racing fuel. But it also has a little lead in it.

I live in a place where the nearest E85 pump is more than 60 miles away. It would be impossible to run my Mustang, on E85, on the street, due to the availability.
Thank you a lot for that well written explanation. Do you think it is worth using e 85 on a daily basis if i have one located nearby? How much does it help anyway?

Texas Rider
 

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E85 is 105 octane
And cost ranges from $1.80- $2.00 a gallon for me here.

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Thank you a lot for that well written explanation. Do you think it is worth using e 85 on a daily basis if i have one located nearby? How much does it help anyway?

Texas Rider
Only if you want to achieve the maximum performance from your engine.
There can be considerable gains even using it in a stock engine, with the right tune. And even bigger gains on a built engine!
It will end up costing you more in fuel because you will be burning much more E85.

It really depends on how aggressively you "daily drive" the car I guess.
 

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Which ones you recommend for e 85? Like 80lb/hr?

Texas Rider
Ford Racing 47lb injectors are what you need. They are direct fit and pretty easy to swap them out.

You will also need a e85 specific tune as well.

Just realized this is not on 2011-2014 Mustang forum....not sure about the 3 valve engine.





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Discussion Starter #18
Only if you want to achieve the maximum performance from your engine.
There can be considerable gains even using it in a stock engine, with the right tune. And even bigger gains on a built engine!
It will end up costing you more in fuel because you will be burning much more E85.

It really depends on how aggressively you "daily drive" the car I guess.
Okay. I plan using 93 octane for now.

Texas Rider
 

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The Ford racing 80lb injectors are **** on the coyotes.
If you plan on staying NA then the 47lbs will work.
Expect a drop in gas mileage and depending on how aggressive you get with timing will determine what kind of power you will make.

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