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Any info on mixing E-85 with gas on GT turbo?

 
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Old 03 Aug 2018, 05:56 am
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Default Any info on mixing E-85 with gas on GT turbo?

I have a 2006 GT turbo, 3" exhaust from heard back with MF muffler and a cold air intake. I got a Diablo Sport 3. when I put a tune in it and it pinged. I tried 101 octane and I got 16 lbs of boost and no ping. ran great, can't afford $9.99 a gallon so a friend said to put about 4 to 5 gallons of E-85 to a 3/4 tank of 91 and it still ran great with 16 lbs of boost and no ping. Is it safe to do that or can I hurt the motor?
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Old 03 Aug 2018, 07:18 am
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Default Re: Any info on mixing E-85 with gas on GT turbo?

I'd ask that so-called friend to show me in his car first. The proof is in the pudding, so to speak. That's all I'm saying.
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Old 03 Aug 2018, 08:56 am
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Default Re: Any info on mixing E-85 with gas on GT turbo?

I'm running a custom tune with 15 psi and no ping on 93 octane. It's around $3.20 a gallon here.
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Old 03 Aug 2018, 11:07 am
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Default Re: Any info on mixing E-85 with gas on GT turbo?

E85 isn't a very consistent blend around here. Just adding 4-5 gallons would be a wildly inconsistent fuel tank to tank. plus since e85 requires 30% more fuel so your tune would be lean.

not sure where you are, but E85 is seasonal here. in winter it's actually E70 to help with cold starting.

i would correct the tune instead of dealing with the hassle of guessing with fuels. mixing it like that sounds like a lot of effort for a car that is not a race car.
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Last edited by rob302; 03 Aug 2018 at 12:34 pm.
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Old 03 Aug 2018, 01:35 pm
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Default Re: Any info on mixing E-85 with gas on GT turbo?

the diablo canned tune is just gonna be 93. i duno why you put 101 in it. This Euro?
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Old 03 Aug 2018, 01:42 pm
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Default Re: Any info on mixing E-85 with gas on GT turbo?

Perhaps you meant to say min. 93 octane fuel recommended or required depending on the published date of the DS script. I have both instruction warning/cautions, one from a very old unit and the most updated version.
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Old 03 Aug 2018, 01:45 pm
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Default Re: Any info on mixing E-85 with gas on GT turbo?

Quote:
Originally Posted by NitroPT View Post
Perhaps you meant to say min. 93 octane fuel
Yes, Minimun 93. Any higher octane isnt going to hurt, except for your wallet.
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Old 03 Aug 2018, 01:49 pm
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Default Re: Any info on mixing E-85 with gas on GT turbo?

Quote:
Originally Posted by Michaeld55 View Post
a friend said to put about 4 to 5 gallons of E-85 to a 3/4 tank of 91 and it still ran great with 16 lbs of boost and no ping.
This mix type is not advised in the fashion being posted. If you run a specif gravity check you would understand why.

Most fuel injected engines and especially a super charged or turbo charged induction you could put small amounts of water in the furl tank(not saying anyone try it) and the fuel system would most likely push it through.

Just because you "THINK" the engine is running well on a chosen octane fuel and not pining only means you can't hear it! Unless you can watch your knock values you don't know what is going on in the real world. This goes without saying in any running condition of an engine. The human ear can not detect the low begin sounds of pre-ignition and when you do finally hear it you can bet your engines has been doing it for a while.
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Last edited by NitroPT; 03 Aug 2018 at 01:52 pm.
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Old 03 Aug 2018, 01:57 pm
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Default Re: Any info on mixing E-85 with gas on GT turbo?

Quote:
Originally Posted by UnitD77 View Post
Yes, Minimun 93. Any higher octane isnt going to hurt, except for your wallet.
HAHAHA... maybe you meant to say that .... using higher octane fuels then recomend may not have any positive value (unless the engine is detonating) and would only hurt your wallet?


This is all subjective anyway. The first information, warnings, cautions or any other way you want to word it, is that the engine be in the good condition. This means that before adding anything that will increase the power output checking the engine is necessary and really logical. Most dont and simply assume it runs and may even run well so it must be in good mechanical condition?
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