Intercooler to Throttle body hose leak
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This is a discussion on Intercooler to Throttle body hose leak within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; I recently flashed too stage 2, and upon having Eric look at datalogs, found out i have a boost leak. ...

  1. #1
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    Intercooler to Throttle body hose leak

    I recently flashed too stage 2, and upon having Eric look at datalogs, found out i have a boost leak. Probably at the intercooler connection.

    1. Why on earth is this so common?
    2. What was everybodys fix? I've heard t bolt clamps, new hose, removing done rubber caps that leak.

    I really can't believe Subaru has never fixed this issue

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    Registered User gregroot198521's Avatar
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    Intercooler to Throttle body hose leak

    If you have a 3rd gen WRX, you're in luck, I have a Tomioka IC-TB hose for sale.
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    Now hold on, let's go over this slowly. Boost/vacuum leaks are exceptionally difficult to diagnose, and jumping to a conclusion regarding the location of the leak will only leave you tired and frustrated. If you have a 3G WRX, it's more likely that you have a leaky BPV that's causing issues. How did Eric ascertain that you had a boost leak?
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    Re: Intercooler to Throttle body hose leak

    The data logs i sent him. I'm just going with his call as he is a tuner & i trust his call. I'll try all available options however

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    Quote Originally Posted by PhoebeusFenix View Post
    The data logs i sent him. I'm just going with his call as he is a tuner & i trust his call. I'll try all available options however

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    OK... so what's your question? I am very familiar with Eric Mines' work.

    Unless you have pressurized your intake, I really would NOT assume that the leak is in that particular location, even if it is common. The leak may be there, or it may not be. My recommendation, if you feel that you have a boost leak, is to pressurize the intake and use a vacuum hose to listen for leaks. You can build tn afta-maf blockoff from basic materials an Home Depot or Lowes and use a basic shop compressor to pressurize the intake. This will save you a LOT of time, headache, and money spent on parts you may not need.
    Last edited by zax; 01-28-2013 at 09:11 AM. Reason: spelling
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    If it is in fact a leak at that connection...perhaps you could just tighten it down a bit? Little obvious to me...
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    Re: Intercooler to Throttle body hose leak

    Quote Originally Posted by zax View Post
    OK... so what's your question? I am very familiar with Eric Mines' work.

    Unless you have pressurized your intake, I really would NOT assume that the leak is in that particular location, even if it is common. The leak may be there, or it may not be. My recommendation, if you feel that you have a boost leak, is to pressurize the intake and use a vacuum hose to listen for leaks. You can build tn afta-maf blockoff from basic materials an Home Depot or Lowes and use a basic shop compressor to pressurize the intake. This will save you a LOT of time, headache, and money spent on parts you may not need.
    I'll look into that! Would be nice to have a definite leak location.





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    Re: Intercooler to Throttle body hose leak

    The reason i posted this is because of the research I've done this is a fairly common problem with this hose.

    Was just looking for possible fixes so I'd one doesn't work, I've got another avenue of troubleshooting.



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