[urq] Throttle Body Port

[Brandon Rogers]

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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