PMS Tuning for E85........

Discussion in 'Fox 5.0 Mustang Tech' started by 302RollinHard, Jul 20, 2007.


  1. 302RollinHard

    302RollinHard New Member

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    I was filling up the other day @ a sunoco that sells pretty much any fuel possible. All grades of gas, E85 and 100 octane race fuel :eek:.
    I thought about how nice it would be to be to be able to run my car on E85, just to say I can.
    I do have a PMS V4, and don't really know where to start with the tune. I would think it would definitely require a wideband.....Any ideas.
    I know this subject was covered on another forum, but no real ideas on how to.......
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  2. Blk91stang

    Blk91stang Member

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    Just be careful with E85 as it can degrade aluminum, rubber fuel lines, injector seals, fuel pump, etc.

    E85 I believe requires around a 10:1 a/f ratio (stoich) and being it is around 102-104 octane, you can increase the timing a good amount and extract that extra horsepower.
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  3. Fox8950

    Fox8950 Member

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    It also takes quite a bit more e85 than gas to make the same amount of power so even though it is cheaper be prepared for your actual mileage to take a dive.

    *Also means your fuel delivery system has to be beefed up considerably to deliver the same power
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  4. 96SVTpilot

    96SVTpilot Member

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    You don't want to run straight ethanol on a non-ethanol factory prepped car. A 20% ethanol/gas blend is considered the safe limit.
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  5. Stanger007

    Stanger007 Founding Member

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  6. enyawix

    enyawix Member

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    E85 302

    http://www.youtube.com/watch?v=HuOs1yap8mU

    Good stuff!

    I have a 302 junk engine I am running E85 test on now :) If I have no issues I will start setting up my daily driver. The only thing that bothers me is you need about 30lbs Injectors for a basically stock engine. That is figuring
    80% duty cycle and a BSFC of .5


    (14.7 / 10) * (Engine HP * BSFC) / (Number of Injectors * (Injector duty cycle*100))
    #6

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