toss the throttle body completely?

[rob hod]

        Yes old bean, I understand exactly what he's talking about, and I'm
just describing what the air plate and associated gubbins does, and pointing
out that it is designed to meter air-mass flow and come up with a suitable
fuel supply to the injectors. By losing the throttle and "manually moving"
the air plate you're doing something which is contrary to the design of the
system and only liable to come up with an appropriate fuel supply under
certain arbitrary conditions. I sincerely don't mean to sound 'flamey' but
its a bit like doing an experiment whereby you chop off your legs to see how
you get around on crutches, the answer is not as well as before!

    BTW I found your pages on window lifter switches pretty useful, shame I
didn't read 'em till after I found it all out for myself!

    Also while I'm on, anyone care to try answering this;

    My car '88 100 2.0E  (RT engine),  has a pipe going from Exhaust
manifold to some kind of sensor, near the rear of the head, is this EGR gear
or what, and how does it work?, Oh actually my 87 KV coupe has it too while
I think about it.

    Cheers

    PS Dan Masi is correct - tyre pressure has nothing at all to do with
weight of the car, - how could you inflate a wheel off the car and get a
meaningful reading otherwise? While i'm at it i'd like to toss in that
contact patch size is only vaguely related to tyre width, (less in fact than
tyre diameter) and resistance to hydroplaning is probably more related to
good tread pattern design than anything else.




rob
----- Original Message -----
From: Huw Powell <audi at mediaone.net>
To: rob hod <rob3 at hod3.fsnet.co.uk>
Cc: <quattro at audifans.com>
Sent: Wednesday, January 31, 2001 6:07 PM
Subject: Re: toss the throttle body completely?


> he's talking about removing the throttle body (the butterfly device),
> not the air plate/fuel dist. assembly...
>
> rob hod wrote:
> >
> >     the basic flaw with this is that the air plate/distributor assembly
is a
> > beautifully engineered assembly designed to very accurately meter
air-mass
> > flow and deliver a very accurately matched fuel supply to the injectors.
It
> > succeeds in most conditions. What you do by manually moving the airplate
is
> > discard all that design work and make yourself the crappiest simulation
of a
> > slide-throttle carb you ever saw. Also the warm up regulator, which
works by
> > lowering the control pressure and allowing greater plate deflection on a
> > cold engine is completely defeated. What a strange experiment!
>
> --
> Huw Powell
>
> http://www.humanspeakers.com
>
> http://www.humanthoughts.org
>