homemade air/fuel gauge...

[Richard J Lebens]

Take a look at http://www.diy-wb.com/info.htm .  It uses a two cell
sensor.  Build it and tell us if it works ok.  They says it will work
from 20:1 to 10:1.


--- JShadzi at aol.com wrote:
> Ti, I agree, an O2 gauge is a very good tuning device, not as
> accurate as say a WB sensor, but any standard O2 will give you a very
> accurate reference to Stoich.  Typically I can get a/f ratio on an
> 034efi unit to within 5% of ideal using a standard O2, then fine tune
> it up with a WB, especially WOT where 12:1 to 13:1 mixtures are not
> as accurate with a standard O2.
>
> Luke, Ti is right, you can get a nice O2 gauge from Summit for under
> $30, why use a multimeter?  Multimeters don't react quickly enough to
> the rapidly changing voltage signal, its just not going to give you
> any useful information, even if its free.
>
> HTH,
> Javad
> >
> >The white wires are for the heating element.  The black wire is
> >the output of the sensor.  The ground is the engine block.
> >Having said that, using a multimeter as a fuel/air gauge during
> >closed loop operation is going to be useless.  The signal varies
> >much too fast for most meters to register a correct reading.
> >
> >-Ti
> >2003 A4 1.8T multitronic
> >2001 S4 biturbo 6-sp
> >1984 5000S turbo
> >1980 4000 2.0 5-sp
> >--
> >    ///  Ti Kan                Vorsprung durch Technik
> >   ///   AMB Laboratories, Sunnyvale, CA. USA
> >  ///    ti at amb.org
> > //////  http://www.amb.org/ti/
> >///
> >
> >


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