[urq] Upper Wastegate Hose on '83 Ur Quattro

Buchholz, Steven Steven.Buchholz at kla-tencor.com
Tue May 4 20:02:09 EDT 2004

... I don't see any way that it would make any more sense ... that port is
documented as a vent on the WX ... it doesn't need to be connected to
anything ... in fact if you started drawing a vacuum there you would be
working against the WG spring and actually causing the WG to open sooner.
Admittedly there isn't much of a vacuum on the back side of the airflow
sensor plate.  Its been a while since I've looked at the engine in my car,
but I know that the line coming off the top of the igloo on the WX is
definitely connected elsewhere ...

Steve B
San José, Kaleefohnia (USA)
> Yep, that makes more sense.....uses the engine vacuum for the upper
> wastegate pressure..
> > On the WR it's connected to the aluminium FI igloo dome thingy.
> >
> > -----Original Message-----
> >
> > This port is used for electronic boost control found on the 
> 5000 turbo's,
> > otherwise it is open to air.
> > ----- Original Message -----
> >
> > Where does it go?  There is a hose attached to mine, but it 
> doesn't go
> > anywhere and I see nothing in the vicinity to connect it to.
> >

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