Honking Bypass valves?

[Marc Swanson]

>     A few months back I put a Bosch type Bypass valve in 80qt.  I have it
> rigged in a stock type installation.  Ever since installing it, I
> get this
> "honking" sound between 0 and 5 psi or so, or only at part
> throttle.  At WOT
> the sound is not there, and above 5 psi or so it goes away.
>     My feeling is that the valve is cracking open, and in doing so lets a
> small amount of air past the diaphram, causing it to resonate and
> flap-making
> the resonating honking sound.  Have any of you ever experienced
> this problem?
>  It makes part throttle driving  very annoying, it feels like there is
> something wrong with the car, when I know there is not.

Are any of your BPV connections pinched?  The only thing I can think of is
if one of the feed/supply/signal vacuum lines is crimped, it might cause a
vibration.  Either that or a bad BPV?  Mine's never done this on me.. at
least I can't hear it anyway (must be because the turbo is always in boost
droning it out ;-)  )


Later!


-Marc-


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