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Author Topic: mixing e85 and 100 octane  (Read 2109 times)

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Offline trashmechlv

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mixing e85 and 100 octane
« on: September 16 2013, 08:14:49 PM »
Anybody tried mixing e85 in with 100 octane? I was searching on some sites but seemed to turn up old posts. Would it be beneficial for slightly higher octane and lowering cost? Maybe be able to run more boost?
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Offline motorhead

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Re: mixing e85 and 100 octane
« Reply #1 on: September 16 2013, 08:22:11 PM »
It will screw with your AFR... so no, it won't work.
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Offline Steve Wood

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Re: mixing e85 and 100 octane
« Reply #2 on: September 16 2013, 09:34:18 PM »
eric makes some e85 chips, but you need larger injectors and a good pump because you have to flow a lot more of it to make the power.  You don't get very far on a tank and alky is very corrosive altho the ethanol is not as bad as methanol
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Offline Charlief1

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Re: mixing e85 and 100 octane
« Reply #3 on: September 16 2013, 11:26:08 PM »
On street gas you can run as much as 30% E-85 but on race fuel I don't think you'd want to use that much. Maybe 15% so you don't mess with your tune any.
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Offline TURBOPOWERED68

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Re: mixing e85 and 100 octane
« Reply #4 on: September 20 2013, 06:22:35 AM »
i mixed E85 and 93 and the result was awesome.
The car must have been rich and the E85 leaned it out just right.
BTW i never went WOT just and few 10 psi pulls.
Idle and cruise seemed un affected.   
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