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wastegate spring question

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    #1

    wastegate spring question

    its a 38mm turbonetics evolution wastegate with a 9 psi spring. if the turbo setup is for 18psi what do i do?

    i called turbonetics and a tech said that i would use the 9psi spring and just ut a boost controller?

    the turbo set up is going to have a boost controller so is what he said safe?

    if its not then does a tial spring fit this wastegate?

    Maury
    Tags: None
    #2
    The boost controller will set the boost (technically the wastegate but the controller will allow you to set it higher). When it reaches that amount I would think it somehow opens up a valve or allows vacuum to travel into the WG letting it open (havent seen an EBC cutout so not sure). I am not sure about the tial spring fitting which it probably wont, but using the boost controller is fine to monitor with a lower rated spring. Its a nice fail safe when you need it too.

    The New-ish Ride
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    MK3 Member #3
    I piss off people for fun.
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      #3
      The lowest amount of boost you can run on a car is determined by your wastegate spring.

      You can raise this boost as high as you want with a boost controller (although boost creep and tapering will get worse the higher you go with a single 38mm WG), but you can never lower the boost BELOW your WG spring.

      If using a manual boost controller, the MBC will mount in line with the air flow to your wastegate spring. This MBC will restrict the air flow to the WG spring, which requires more boost to actually get TO the spring and open it.

      I believe that most electronic boost controllers will mount in line, as well as on the top portion of your wastegate. (tials have 2 nipples on them, upper and lower) The Upper nipple will come from your EBC and put additional boost pressure in the top portion of your wastegate, making the spring work harder to open up and release pressure.

      So, you can either buy additional springs to run combinations that will manually get you 18 psi (but you can not run lower than that) or you can buy a boost controller which you can change much easier to run any boost you like, as long as its over the 9 psi spring.



      Formerly 91AccordExR33
      11.68 @ 127mph
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      Sold: 8/2016

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        #4
        what the hell are you running 18 psi on anyways?

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