[urq] Throttle Body Port

[Ben Swann]

That is what I am trying to find out.  The location of this port is in the
throttle body - it is not necessarily going to exhibit the same
characteristics as ports in the manifold would.  Since it is in a location
where air is moving through very quickly, I think by Venturi effect, it
would have higher vacuum as air passes through it and weather engine under
boost or not would always be vacuum.

But this is what I amn trying to confirm.

Ben
----- Original Message -----
From: "Brandon Rogers" <brogers at terrix.com>
To: "Ben Swann" <benswann at comcast.net>; <urq at audifans.com>;
<quattro at audifans.com>
Cc: "Ben Swann" <benswann at comcast.net>
Sent: Monday, April 11, 2005 11:46 AM
Subject: Re: [urq] Throttle Body Port


> Unless there is a check valve, I don't see how anything in the intake
(post
> turbo) could be vacuum only....
>
> maybe I'm wrong...
>
> Brandon
>
> ----- Original Message -----
> From: "Ben Swann" <benswann at comcast.net>
> To: <urq at audifans.com>; <quattro at audifans.com>
> Cc: "Ben Swann" <benswann at comcast.net>
> Sent: Friday, April 08, 2005 8:55 PM
> Subject: [urq] Throttle Body Port
>
>
> > I'm still trying to confirm what this port does exactly.  Not what it is
> > being used for, but weather it is alsways vacuum  and directly
> > proportional
> > to the airflow through the throttle body and weather the engine is under
> > boost or vacuum doesn't matter.
> >
> >
> > [What exactly does the throttle body port on the UrQ(and others) do?  By
> > that, how does it behave?  Is it using venturi effect to induce
increasing
> > vacuum as flow through TB increases.  Is it always vacuum - even under
> > boost.  Is its highest reading at max flow?
> >
> > Anyone know for sure?
> >
> > Ben]
> >
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