1.4 bar low boost and recent owner impressions

auditude at cox.net auditude at cox.net
Wed Jan 28 09:51:42 EST 2004

Hi Phil,

The bypass valve I put in was a new unused OEM Bosch one.  These don't make any noise?  It's not super-loud, but I can tell it's there.

Is this the consensus of the rest of the list?  Stock Bosch BPV's don't make a shoosh?

Why would a tear make it louder when shifting?  I can understand maybe if it was making noise under boost but not while shifting.



Phil Rose <pjrose at frontiernet.net> wrote:
> At 9:40 PM -0700 1/27/04, auditude at cox.net wrote:
> >  the car
> >makes an audible bypass valve noise when I shift.
> Hmm, that's suspicious (i.e., that you have a "bypass valve noise"). 
> Was the leaking BPV replaced with a brand new, stock (Bosch-type) 
> valve? The several (new, functioning) Bosch valves I've had have not 
> made any distinctive noise when I shift (or any other time). A tear 
> in the valve bellows could be causing that noise. Or some other leak. 
> Have you checked to determine that the vac line to the BPV is intact?
> Phil

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