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Thread: PSIG to Vacuum - Why the need for different measurements?

  1. 11-08-2019, 04:58 PM #1
    TurboCow
    TurboCow is offline Member
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    Default PSIG to Vacuum - Why the need for different measurements?

    I'm wondering if there will ever be a option to show my fuel chart as RPM & Vacuum (as on my vacuum/boost gauge). Why the need for PSIG? I'd love to be driving @ 2000 RPM, look at the vacuum gauge, and say "it needs to be leaner @ 2K RPM around 15 inHg vacuum. That would be so easy to find on the fuel map & change. Currently, I have to do a calculation to find where it is. Am I doing it wrong or is there a better way to go about tuning?
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  2. 11-08-2019, 05:34 PM #2
    Danny Cabral's Avatar
    Danny Cabral
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    Quote Originally Posted by TurboCow View Post
    I'm wondering if there will ever be a option to show my fuel chart as RPM & Vacuum (as on my vacuum/boost gauge).
    I don't know, but I got used to reading MAP kPa real quick.
    https://forums.holley.com/showthread...4437#post64437 (MAP kPa to inHg (vacuum gauge) to PSIG)

    Why the need for PSIG?
    For boosted/forced induction users.
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