O2 voltages

[Bruce Plecan]

Nope,
the 14.7 is for the EPA, Period.
There is no reason to waste that much fuel at cruise, other then for those
folks.
Then they swing it way rich and lean to keep the converter at operating
temp..
Did a car at the PW that was happy as punch at 15.25-15.5:1  light cruise,
and this was a big car and engine.
I'll bet ya 50 cents I will get the GN to almost 16:1 in light cruise and
still have a 12 sec car.
Bruce


> Bruce, I though the O2 was for fuel mixture. The effects on the cat are
> secondary.
>
> Mere coincidence or   psychic phenomenon?
>
> ----- Original Message -----
> From: Bruce Plecan <nacelp at bright.net>
> To: <diy_efi at diy-efi.org>
> Sent: Monday, October 02, 2000 9:44 PM
> Subject: Re: O2 voltages
>
>
> >
> > Light cruise idle, then would be 15:1 for mileage, and min engine wear.
> > 14.7 is an average.   Deliberately runs rich and leaner then that to
keep
> > the convert lite.
> > The ecms cycle wildly over the .440 ref voltage.
> > If they wanted a perfect 14.7 they could really tighten that up.
> > Least that's what I recall reading in the archives
> > Bruce
> >
> >
> >
> >
> >
> > > It's to keep the engine at stoich or 14.7:1 AFR.
> > >
> > > ----- Original Message -----
> > > From: Programmer <nwester at eidnet.org>
> > > To: <diy_efi at diy-efi.org>
> > > Sent: Monday, October 02, 2000 10:26 PM
> > > Subject: Re: O2 voltages
> > >
> > >
> > > > Here's one for ya--is the O2 really for keeping the engine AFR
> > corrected,
> > > > or is it to keep the fire burning in the converter ? Which does the
> EPA
> > > > feel is more important--which does the manufacturer feel is more
> > important
> > > ?
> > > > I'm just throwing this out for wideband comment...
> > > > Lyndon.
> > >
> > >
> >
>
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