Re: 2Bennett Ricirc setup...

[Kiwi <enzeder@home.com>]

At 12:23 AM 12/29/1999 +0000, you wrote:
>Bernard Littau wrote:
>
>> A blow off valve beyond the turbo can vent this extra pressure, preventing
>> the pressure spike and turbo slowdown.  A blow off valve vents to the
>> atmosphere, so the air is lost.  A recirculation setup ducts the air from
>> beyond the turbo to before the turbo.  This prevents the pressure spike,
and
>> also keeps one from loosing measured air from the system.  I suspect it is
>> also more efficient to recirculate the air in terms of keeping the turbo
>> spinning -- you are in a sense using air that is already in motion rather
>> than accelerating new air.
>
>A question; in a recirc setup, when you take the foot of the gas pedal,
there
>is less air drawn through the Fuel Injection air flow meter so the injection
>will feed less fuel to the engine.  Would you concider that good, bad or
dosn't
>matter ?
>
>

Only compared to the blow off system.  As the recirc system is closed, it
would use the same fuel as a completely unmodified car.  The blow off
system is going to vent metered air, and therefore cause an excessively
rich mixture (if only briefly).  Better to have the air recirculating than
venting.