1.4 bar low boost and recent owner impressions
pjrose at frontiernet.net
Wed Jan 28 15:24:51 EST 2004
At 9:51 AM -0500 1/28/04, <auditude at cox.net> wrote:
>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
>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.
A leaking vac hose (or a tear in the BPV bellows material) acn
prevent the manifold vacuum from fully retracting the bellows valve
when you go off-throttle. If the valve is able to open only slightly
(rather than full open) it might cause the (bypassing) boost air to
make a "whoosh" sound as goes past--towards the turbo inlet. I
suppose that same tear in the vac hose could account for low boost.
mailto:pjrose at frontiernet.net
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