Bypass installation

Ken Keith auditude at
Thu Sep 6 14:36:36 EDT 2001

rdeis at wrote:
> On Thu, 6 Sep 2001, Swann, Benjamin R.  (BSWANN) wrote: 
> >
> > If  a bypass valve is routed from before the throttle body to before
> > the turbo inlet, as I understand it should be, won't that cause a
> > problem with the pressure forcing the throttle plate down to
> > abruptly?   Just curious. 
> No--  The purpose of the CBV is to release a pressure wave
> that was *created* when the throttle closed abrubtly. It doesn't allow
> air to move in such a way that it will exert pressure on the throttle
> plate. --

I think the throttle plate in question is regarding the metering plate 
in the fuel distributor, not the throttle body plate (which I think is 
what you are referring to).

It seems to me that the metering plate would be let down a bit 
when the throttle is closed, reducing the flow of fuel to the motor. 

Otherwise, an overly rich condition would occur since the air 
recycling through the turbo would not be going into the motor, but 
the plate would still act as if it was.

I've wondered the same thing as Benjamin.  I could be wrong about 
the question tho'.  Seems to me that forcing the throttle plate 
"down" describes the metering plate, since it's horizontal I think.

Best regards,


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