BOV whistles loud after STI TMIC install
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This is a discussion on BOV whistles loud after STI TMIC install within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; title pretty much says it all, STI TMIC with the stock WRX bov. As soon as I hit around 2 ...

  1. #1
    Registered User ej20_allday's Avatar
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    BOV whistles loud after STI TMIC install

    title pretty much says it all, STI TMIC with the stock WRX bov. As soon as I hit around 2 psi, it starts to scream!

    Doesn't appear to be losing boost but is this okay?
    I keep my scooby clean

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  3. #2
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    Sounds like a leak to me. Did you re-use the gasket?

  4. #3
    Registered User ej20_allday's Avatar
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    unfortunately, yes
    I keep my scooby clean

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    Registered User fire_cky's Avatar
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    Quote Originally Posted by brfatal View Post
    sounds like a leak to me. Did you re-use the gasket?
    +1
    '07 wrx wagon:
    Cobb catback, cobb short ram with intake box, turbosmart small recirc valve, yellow tinted fogs.

    little bit older and a little bit more jaded.

  6. #5
    The Default One SeattleJeremy's Avatar
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    Sounds like it's loosing pressure somewhere.
    The BPV should not make noise at any psi.

    How are you measuring boost?

    Are you sure it's coming from the BPV?
    Did you hook the hose back up to the BPV?
    Did you torque the bolts holding the BPV to spec (12ft/lbs)

  7. #6
    Registered User ej20_allday's Avatar
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    i'm hitting the stock boost like I should, 14.5 or what ever it is
    I keep my scooby clean

  8. #7
    Registered User ej20_allday's Avatar
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    Quote Originally Posted by jeremy96gase View Post
    Sounds like it's loosing pressure somewhere.
    The BPV should not make noise at any psi.

    How are you measuring boost?

    Are you sure it's coming from the BPV?
    Did you hook the hose back up to the BPV?
    Did you torque the bolts holding the BPV to spec (12ft/lbs)
    guess the bolts weren't torqued all the way, doesn't whistle anymore
    I keep my scooby clean

  9. #8
    The Default One SeattleJeremy's Avatar
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    Very strange.
    Normally, it's difficult to hit target boost if there is so much air leaking from the system that the driver can hear it.

    Well, whatever, glad you got it fixed

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