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air filter restriction vacuum reading

Discussion in 'Turbo Tech Questions' started by capri302, Sep 21, 2018.

  1. capri302

    Joined:
    Mar 27, 2003
    How much vacuum is normal in the inlet flange between filter and turbo ?
     
    capri302, Sep 21, 2018
    #1

  2. TomR

    Joined:
    Jan 1, 2013
    You have to be careful measuring in an area where air has high velocity. It is easy to have air motion modify the real pressure.

    You really want as close to 0 psig as you can get. The problem is measuring it. That can be tricky.
     
    TomR, Sep 22, 2018
    #2

  3. 64nailhead

    Joined:
    Oct 20, 2013
    Depends on how much of a restriction your air filter is creating. I don't know if a measured value is going to be meaningful without a track time or dyno number to compare it to.

    Really didn't answer your question
     
    64nailhead, Sep 28, 2018
    #3

  4. Forcefed86

    Joined:
    Nov 24, 2005
    Forcefed86, Sep 28, 2018
    #4

  5. TTF/Ken Staff Member

    Joined:
    Dec 31, 2011
    The Motorcraft version is available on Amazon for less. The only difference is it has a connector for an air filter restriction dash light (they made this for the Powerstroke, but it will work on basically anything):

     
    TTF/Ken, Sep 28, 2018
    #5

  6. Drac0nic

    Joined:
    Feb 28, 2005
    This is pretty cool, thanks for the links. GM ones are $40+ on Amazon. It's just absurd.
     
    Drac0nic, Oct 18, 2018
    #6

  7. TTF/Ken Staff Member

    Joined:
    Dec 31, 2011
    Yeah, its weird how prices are all over the board for the same product. And its not that one manufacturer will always cost the most. For instance, supercharger oil: you can't beat GM's price, Ford charges an arm and a leg, and the aftermarket (like Kenne Bell) charges more than both Ford and GM.
     
    TTF/Ken, Oct 18, 2018
    #7
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