[urq] Re: Throttle Body Port

[Ben Swann]

Steve,

The '82-83  WX Control Pressure regulator can be used as a rising rate
regulator  by using the ports - I verified their operation.  The ports
however operate somewhat in reverse - the port that does most of the work
requires vacuum to erich and pressure to enlean.

Use of both boost and vacuum signals would work effectively if hooked up
properly.

Ben


[From: "Buchholz, Steven" <Steven.Buchholz at kla-tencor.com>
Subject: RE: [urq] Re: Throttle Body Port
To: <urq at audifans.com>
Message-ID:
<BD316B4584174147B080289F69FC761601ADEF21 at CA1EXCLV03.adcorp.kla-tencor.com>

Content-Type: text/plain; charset="us-ascii"

.... what exactly is it that you want the signal for?  Frankly, I think
you're going to have a difficult time finding a vacuum signal that is
linear with flow.  The best source for this would be the airflow sensor
plate ... one thing I've wanted to do was to get the plate with the
potentiometer for the fuel economy computer and integrate it into my
car.  The potentiometer would provide a signal which was related to the
airflow into the engine.

You might want to put a differential sensor across the throttle plate,
or just monitor the vacuum in the tract between the airflow sensor and
the turbo compressor inlet, but I would not expect to see a very strong
signal at either point.

Steve B
San Jose, CA (USA)
>
> Where might one get a vacuum source that is directly proportional to
the> airflow in the engine and not related to boost?  That is highest
vacuum at> max flow which is perhaps even at high boost.]