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Thread: Tune file identification.

  1. 08-24-2022 #1
    Life is an Enigma
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    Question Tune file identification.

    How do you tell the difference between a vacuum reference tune file and a non vacuum reference file?
    Last edited by Life is an Enigma; 08-24-2022 at 11:05 AM.
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  2. 08-24-2022 #2
    2xLS1
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    All fuel systems have a return somewhere. The difference is if it has a vacuum referenced regulator in the system with a return. If it does the IFR table will have the same number in every cell. If it doesn't the IFR table numbers will be sloped.
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  3. 08-24-2022 #3
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    Quote Originally Posted by 2xLS1 View Post
    All fuel systems have a return somewhere. The difference is if it has a vacuum referenced regulator in the system with a return. If it does the IFR table will have the same number in every cell. If it doesn't the IFR table numbers will be sloped.
    You're right. My question was worded poorly. so by what you're saying is the cell is consistent all the way across. It has a vacuum reference but if it's sloped it's a non vacuum reference tune file?

    vacuum referenced regulator file?
    Screenshot (795).png

    Non vacuum referenced regulator file?
    Screenshot (794).png
    Last edited by Life is an Enigma; 08-24-2022 at 11:22 AM.
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