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Boost Gauge vs Boost/Vacuum Gauge

This is a discussion on Boost Gauge vs Boost/Vacuum Gauge within the Forced Induction forums, part of the LSx Technical Help Section category; What's the difference? and why would you run one over the other? Supercharger = Boost? Turbo = Boost/Vacuum? I'm mostly ...

  1. #1
    Sold: LS1 '85 El Camino ls1camino's Avatar
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    2000 Grand Prix GTP
    2000 Trans Am WS6 M6

    Boost Gauge vs Boost/Vacuum Gauge

    What's the difference? and why would you run one over the other?

    Supercharger = Boost?

    Turbo = Boost/Vacuum?

    I'm mostly curious

  2. #2
    Member Sweet Chops's Avatar
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    1999 Camaro Z28

    On my GTP I have Boost/Vacuum.

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    NASCAR Go Fast, Turn Left ntimid8r's Avatar
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    383 w/Meth & ProCharger
    2001 Camaro Z28

    It's better to have a Boost/Vacuum gauge regardless which FI you have. You want to see at what rpm the motor is referencing the amount of vacuum or boost. Gives a wider scope of motor efficiency versus just looking at boost.

  4. #4
    Junior Member Websy21's Avatar
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    Metallic Pewter
    2001 Trans Am WS6

    Quote Originally Posted by ntimid8r View Post
    It's better to have a Boost/Vacuum gauge regardless which FI you have. You want to see at what rpm the motor is referencing the amount of vacuum or boost. Gives a wider scope of motor efficiency versus just looking at boost.
    Nicely put, I agree with getting the boost/vac as well.

  5. #5
    Junior Member SCREAMIN01SS's Avatar
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    Black
    2001 Camaro SS

    does anyone have pics of how they tied into their sources for the boost gauge?

  6. #6
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    I went with an electronic boost gauge that utilizes its own map sensor. Why?

    Well,

    - I don't have to deal with running a line into the car
    - much more accurate and faster readings (shows instant boost spikes)
    - adjustable warning light
    - records peak boost
    - can be data logged
    - and the cool factor!

  7. #7
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    Quote Originally Posted by SCREAMIN01SS View Post
    does anyone have pics of how they tied into their sources for the boost gauge?
    I'll try and get a pic.

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