High RPM between gears

[Lawrence C Leung]

The throttle dashpot was set up mostly for carburated cars. When the
throttle was slammed shut, fuel flow into the venturi would continue for
a moment due to fluid momentum. This would be open to intake air (now
with no velocity) which meant raw hydrocarbons would dump directly onto
the butterfly and into the atmosphere. Since fuel injected cars meter
fuel under pressure in response to either the fuel distributor plate or
the mass flow sensor, this seems to serve little purpose. So, Audi must
have designed this in for some other reason. 

LL - NY

On Sat, 17 Mar 2001 09:19:43 -0500 "Kevin Phillips"
<kevphill at mediaone.net> writes:
>>     My car exhibits this same function.  It's like having a ten ton
>> flywheel, shifting just feels so damn slow all of the time.  I watch 
>the
>> tach and when I shift it sort of hangs then slowly comes back down.  
>I
>> really wish I had the flywheel lightened those two times I had the
>> transmission down.  If I try to shift to quickly it just jars the 
>car way
>> too much and it surely ain't good for any drivetrain part.  I 
>thought this
>> was normal for these cars, anyone?
>
>>my 90Q does it too, I've been trying to observe it carefully... i
>>suspect something lets air that is not needed in for a moment after 
>the
>>pedal is lifted.
>
>Huw hits the nail on the head.
>This is done to reduce some "nasty" emission or another on gear 
>changes.
>There is a damper connected just below the throttle that keeps it 
>open
>slightly for a second or so.
>I have yet to remove mine so cannot say 100% that this will work but I 
>think
>it will.
>
>Kevin Phillips AIM "quattrohead"
>Western Massachusetts
>1990 200q
>1995 900 SET
>Cell 413 519 9034
>
>
>