[s-cars] Help with a "moisture trap" definition re: boost gauge installation

[Mark Strangways]

Well, where's the fun in that.
I see why Audi would put that in place now, thanks big Joe...
But I will keep my very cheap yet surprisingly neat, "Jam the vacuum line in
the crack between the IC and the center cluster" mounting method BOOST ONLY
gauge. Or should I just shut up know while I'm ahead (ok, in my mind only)

Mark S
----- Original Message -----
From: "Joseph Pizzimenti" <pizzoman at yahoo.com>
To: "Mark Strangways" <strangconst at rogers.com>; "Dave Forgie"
<forgied at burnaby.associated-eng.com>; <s-car-list at audifans.com>
Sent: Monday, July 07, 2003 5:45 PM
Subject: Re: [s-cars] Help with a "moisture trap" definition re: boost gauge
installation


> Boys,
> Simmer down.
> Injectors were on the intake manifold last I checked
> on the AAN and this whole boost gauge tapping issue
> can be solved by using an overpriced, but real pretty
> electrical Omori or Defi gauge, which has a remote
> sender that sits in the engine bay and all you get in
> the passenger compartment is a few wires.
>
> FWIW, there's more harmful stuff in the ambient air in
> Jersey (which smells) than you'll ever get from a
> mechanical boost line into your cabin.  Also, if it
> ever leaked (on a mechanical gauge), you'd see ZERO
> boost and I hope you would notice that first.
>
> Pizzo, not Joel
> '94 RS2'd S4 for sale
>
> --- Mark Strangways <strangconst at rogers.com> wrote:
> > I did mine just about right at the ECU.
> >
> > But, why would there be fuel in the intake manifold
> > really ??
> > The fuel is injected at each cylinder.
> >
> > But I assume that would be a thread for another day
> > !
> >
> > Mark S
> > ----- Original Message -----
> > From: "Dave Forgie"
> > <forgied at burnaby.associated-eng.com>
> > To: <s-car-list at audifans.com>
> > Sent: Monday, July 07, 2003 4:00 PM
> > Subject: [s-cars] Help with a "moisture trap"
> > definition re: boost gauge
> > installation
> >
> >
> > Gentlemen:  I have been having an internet
> > "conversation" with an
> > "internationally reknowed" (in his opinion) "20vt
> > tuner" (You can guess
> > who).  The point of the discussion is my
> > understanding about the "moisture
> > trap" (which is isn't) and my contention that you
> > should be able to T a
> > boost gauge anywhere downstream of the "trap".  What
> > is wrong with my
> > statement below?  Comments and corrections
> > appreciated.
> >
> > Dave F. suggested:
> >
> > "The 'moisture trap' (which is the wrong name for
> > it) is an analogue to
> > analogue pressure  transducer, i.e. there is a
> > air/fuel mixture pressure
> > "signal" from the intake manifold side of a  fuel
> > resistant diaphram which
> > is translated to an air-only pressure "signal" in
> > the plastic tube  leading
> > to the ECU. The pressure transducer (2.5 BAR or 3
> > BAR) inside the ECU box is
> > analogue (pressure) to electrical and translates the
> > analogue pressure
> > signal (can be read  on an analogue gauge) to a
> > millivolt electrical signal
> > (that can be read with a multimeter - as you well
> > know) that is read by the
> > chips in the ECU. (The one thing I don't know is
> > whether  the ECU pressure
> > transducer also creates a digital output from the
> > millivolt pressure
> > translation or there is something else that does
> > this before the chips).
> >
> > In any event, to install an analogue pressure gauge,
> > it should be fine to T'
> > off anywhere  downstream of the analogue pressure
> > transducer and before the
> > ECU box. The advantage of  T-ing near the ECU is the
> > analogue pressure
> > signal tube has already gone through the  firewall
> > and into the passenger
> > cabin. "
> >
> >  Dave F.
> >
> > _______________________________________________
> > S-CAR-List mailing list
> > S-CAR-List at audifans.com
> > http://www.audifans.com/mailman/listinfo/s-car-list
> >
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>
>
> =====
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> The preceding statement is true.
> -------------------------------------
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