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Old 01-12-2008, 03:13 PM   #1 (permalink)
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Filling up with e85

When is the proper time to do so? Pre tune, or post tune?

I am getting tuned and wonder if it would be alright to fill up my tank when it hits empty(light on but still some gas in the tank). I will have about a half of a mile to drive for the tune. Is this ok to do?

Other option is to bring 5 gal. of the fuel with me and fill it up at the tuners.

Maybee some of the e85 runners can chime in w/ thier experiences.
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Old 01-14-2008, 08:54 AM   #2 (permalink)
 
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Go to the tune almost on empty. and fill it up with e-85 on the dyno. that way you do not have the other fuel in the system during the tune. Just what I would do. Some one in Denver did that, I can't remember who tho. Justin or josh knows who tho.
So just bring like 2 10 gallon jerry cans

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Old 01-15-2008, 11:51 AM   #3 (permalink)
 
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FILL UP ON LOCATION!

If you fill up and drive there you have the very easy option of saying good buy to your engine on the way there.

Reason: Your cars computer has to be changed alot to work with this fuel. Basically you will run very lean (not enough gas).

tobz
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Old 01-15-2008, 07:45 PM   #4 (permalink)
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Thaks for the input, here's a few more things that concern me.

What about the residual "gas" in the tank? Will it not lower the Ethanol content?
Doesn't "E" content affect the tune?
Shall I drain the tank, or am I making this harder than it has to be?
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Old 01-15-2008, 09:57 PM   #5 (permalink)
 
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Theres no problem mixing them. You just dont want to have just E85 in the tank without a tune.

You just want to have the tank mainly empty so when making the change you will have mainly E85 and not a mix of both which would just lower the octane rating of the gas in your car.

Hopefully this makes sense.

tobz
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Old 01-16-2008, 08:08 AM   #6 (permalink)
 
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Quote:
Originally Posted by tobz View Post
Theres no problem mixing them. You just dont want to have just E85 in the tank without a tune.

You just want to have the tank mainly empty so when making the change you will have mainly E85 and not a mix of both which would just lower the octane rating of the gas in your car.

Hopefully this makes sense.

tobz
Tobz is right, just come with the least amout of pump gas as you can and bring 2 gas cans with you to the tune and fill up there before you get on the dyno. that is the best way and that is what someone else did and it work out for him.

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