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Thread: 142 guys

  1. #11

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    Quote Originally Posted by 05_RXP View Post
    Hey this question is for the guys running bigger chargers on the 300.
    when does it become necessary to run more then pump/ 94 octane fuel?


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    If you keep your RPM around 8600RPM and timing conservative and AFR about 12 I think you can probably get away with it on 91 non ethanol. That being said, no way I wouldn't do that without Motec where you could tweak the map to perfection. You can also run some octane boost like boostane. But you'll eat plugs and sensors faster but it will give headroom to push the limits.

  2. #12

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    Quote Originally Posted by guybb3 View Post
    I hate to be dumb but why would you guys WANT E85? Doesn't it contain less thermal energy per volume than gasoline?
    If it's true E85 I think its in the 110 octane range. There can be a lot of variation in pump E85 though, still it will be higher than 93. Very difficult to detonate. But yah you have to run 20-30% more fuel for the same energy output...bigger injectors, run out of fuel quicker.

  3. #13
    www.eastcoastpwc.net Scott's Avatar
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    Quote Originally Posted by DinoMite View Post
    If it's true E85 I think its in the 110 octane range. There can be a lot of variation in pump E85 though, still it will be higher than 93. Very difficult to detonate. But yah you have to run 20-30% more fuel for the same energy output...bigger injectors, run out of fuel quicker.
    Exactly! E85 from the pump is almost never consistent whatsoever. Would need to blend it or purchase by drum to keep consistent unless running a flex fuel sensor which I doubt using stock ECU.


  4. #14
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    Quote Originally Posted by Scott View Post
    Exactly! E85 from the pump is almost never consistent whatsoever. Would need to blend it or purchase by drum to keep consistent unless running a flex fuel sensor which I doubt using stock ECU.
    yes & yes..dedicated Fuel System (1300's injectors) AFR where perfect, no fuel content issue. planning on swapping my set up to a 2020 TX..

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  6. #15
    www.eastcoastpwc.net Scott's Avatar
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    Quote Originally Posted by Myrak View Post
    yes & yes..dedicated Fuel System (1300's injectors) AFR where perfect, no fuel content issue. planning on swapping my set up to a 2020 TX..
    Sounds like a cool setup!

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