Need help on determining noise
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This is a discussion on Need help on determining noise within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; If anyone can give me their expertise on this, it would be greatly appreciated. Here is the background info. Current ...

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    Need help on determining noise

    If anyone can give me their expertise on this, it would be greatly appreciated. Here is the background info. Current mods on the car include a K&N Typhoon, Process West Intercooler and a Forge BPV (yellow spring). If I boost the car past ~5psi and release the throttle I can hear a "barking" noise coming from which sounds like the intake. You can hear it in the video below (sorry for the road noise).


    I'm a little worried its the compressor stalling. I know for a fact it's the Forge BPV because I reverted back to my stocker and the noise is gone. I know you would probably say, well stick with the stocker, but I'm unsure it will hold the pressure of TP 3.52, so I would like to get the Forge working correctly. Any ideas on why the Forge BPV would cause this?


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  3. #2
    Moderator Donkey's Avatar
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    Quote Originally Posted by KennySPT View Post
    but I'm unsure it will hold the pressure of TP 3.52,
    Not sure what you mean by "TP 3.52" . I would make sure that the valve piston is freely moving. Maybe try removing the spring and lubricating the valve with a dry teflon lubricant. Have you tried the green spring?
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    Torqued performance map. It'll push about 20psi. I've taken apart the bpv and used Teflon lube but the problem still persists.

  5. #4
    Gold Member lokey's Avatar
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    Which forge bpv did you get? Model #?
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    It's the wrx one not the Mazda. Forgot the model #

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    Gold Member lokey's Avatar
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    Recirculating one?
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  8. #7
    Moderator Donkey's Avatar
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    Try the green spring.
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    Yeah its the recirculation. I'm trying to contact forge about getting a green spring. Hopefully it'll resolve the issue.

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