O2 / Lambda Sensor Data

Bruce Plecan nacelp at bright.net
Thu Apr 26 16:26:51 GMT 2001


And who are you to state that?.
Maybe less PC, but that's even a mute point.
The list is about accurate info.,  period.
Bruce


----- Original Message -----
From: "Shirley, Mark R" <MarkRShirley at eaton.com>
To: <diy_efi at diy-efi.org>
Sent: Thursday, April 26, 2001 10:20 AM
Subject: RE: O2 / Lambda Sensor Data


> Don't take it personal, Bruce is one of the grouchier guys on the list.
>
> > -----Original Message-----
> > From: David Gregory [mailto:dcg1174 at tntech.edu]
> > Sent: Thursday, April 26, 2001 10:00 AM
> > To: diy_efi at diy-efi.org
> > Subject: RE: O2 / Lambda Sensor Data
> >
> >
> > gee, why don't you be a dick?
> >
> > -----Original Message-----
> > From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> > Behalf Of Bruce Plecan
> > Sent: Thursday, April 26, 2001 8:06 AM
> > To: diy_efi at diy-efi.org
> > Subject: Re: O2 / Lambda Sensor Data
> >
> >
> >
> >
> >
> > > I come from an applied physics upbringing and I know 2 cars
> > is not ideal,
> > > but it's better than 1!
> >
> > I fail to see where that is an excuse for giving out poor info..
> >
> >  As long as you keep the sensor roughly at the same
> > > temperature for DIY use I think it's fine, it may not be
> > absolute but it
> > can
> > > measure the presence of more of less fuel, even off
> > stoichiometric. I hope
> > > to get a thermocouple in there soon to monitor the temperature.
> >
> > Might read further and see that backpressure can also play a role.
> > Also, not all sensors switch over at .5v.
> >
> > > I wouldn't know how to read the plugs accurately and the
> > only trouble is
> > you
> > > can't read the plugs while they are still in the engine :-)
> > One advantage
> > I
> > > didn't mention is that the WOT map curve isn't perfectly
> > flat. I guess it
> > > takes into account the volume efficiency of the engine. The
> > standard curve
> > > shape gave a wobbly mixture across the range(read from the
> > mixture meter),
> > > we re-shaped the curve to give a constant mixture reading
> > throughout the
> > rev
> > > range.
> > >
> > > I'll be the first to admit I don't know the ins and outs of
> > engine tuning.
> >
> > And you want to give advise?.
> >
> > > I'm just a evening hobbyist, but the car feels better now,
> > and hopefully
> > > will give a few more ponies at the rolling road (at 60quid
> > a throw I can't
> > > afford to tune it on the rolling road itself, and besides
> > it fun to have a
> > > go yourself)
> >
> > And remember, Buttometer readings are meaningless.
> > Bruce
> > >
> > >
> > > Will
> > >
> > > P.S. I've searched the archives, there is lots of info and
> > I learnt a lot,
> > > without the people on the list I wouldn't have got to this
> > stage, I just
> > > thought I would put some hand on experience back.
> > >
> > > -----Original Message-----
> > > From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> > > Behalf Of Bruce Plecan
> > > Sent: 25 April 2001 22:31
> > > To: diy_efi at diy-efi.org
> > > Subject: Re: O2 / Lambda Sensor Data
> > >
> > >
> > >
> > > 2 cars is hardly enough to start making universal generalizations.
> > > If you would care to read the archives you'll find out alot
> > more about
> > them.
> > > If you repeated your experiments by reading the plugs you'd
> > have saved
> > more,
> > > and been more accurate
> > > Bruce
> > >
> > > <snip>
> > >
> > >
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> > >
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