NB-O2 sensors suck! was Re: another wiring question

[jdbubb at ix.netcom.com (Dan Bubb)]

"Narrow Band" is the common description since it is accurate over a very
narrow band i.e. stoichiometric.

----- Original Message -----
From: "Jeff Toomasson" <jtoomasson@yahoo.com>
To: <scirocco-l@scirocco.org>
Sent: Thursday, May 15, 2003 2:35 PM
Subject: Re: NB-O2 sensors suck! was Re: another wiring question


> Dan B. - does NB = Normal Band (as opposed to Wide Band...)?
>
> thx, JT
> ----- Original Message -----
> From: "Dan Bubb" <jdbubb@ix.netcom.com>
> To: "Drew Teague" <roccnroll@hotmail.com>; <scirocco-l@scirocco.org>;
> <sad_rocc@yahoo.com>
> Sent: Thursday, May 15, 2003 11:31 AM
> Subject: NB-O2 sensors suck! was Re: another wiring question
>
>
> > Let me rephrase:
> > It's only accurate at stoichiometric.
> > It's informative about whether your engine is running rich or lean.
> > It's useless at telling you how rich or lean. i.e. neither accurate nor
> > precise more than a couple tens of an A/F ratio away from
stoichiometric.
> > The last line is just my opinion although it is a commonly held opinion
> > among those tuning aftermarket EFI. As an example, it would be a bad
> mistake
> > to attempt to tune a turbo engine using just a standard NB-O2 sensor!
> > Dan(the other Dan)
> >
> > ----- Original Message -----
> > From: "Drew Teague" <roccnroll@hotmail.com>
> > To: <jdbubb@ix.netcom.com>; <scirocco-l@scirocco.org>;
> <sad_rocc@yahoo.com>
> > Sent: Thursday, May 15, 2003 2:03 PM
> > Subject: Re: another wiring question
> >
> >
> > > >Also, you shouldn't expect too much as far as accuracy from this
gauge.
> > It
> > > >will accurately tell you if you're at stoichiometric or whether you
are
> > > >rich or lean, but it really will give you no idea HOW rich or lean.
As
> an
> > > >example, if you were running open loop and at 15.5:1 while cruising
> down
> > > >the highway (which the engine would be totally happy with) the gauge
> > would
> > > >indicate dead lean. Very little accuracy on the lean side and not
much
> > > >better on the rich side.
> > > >Dan (the other Dan)
> > > >
> > >
> > > So, in other words, it _is_ very accurate, just not *precise*  :)
> > >
> > >
> > > **Drew Teague**
> > > Harrisburg, PA
> > >
> > > '84 8v Rocco --  "Bruise"
> > > '85 BMW 318i
> > >
> > > _________________________________________________________________
> > > Tired of spam? Get advanced junk mail protection with MSN 8.
> > > http://join.msn.com/?page=features/junkmail
> > >
> >
> >
> > _______________________________________________
> > Scirocco-l mailing list
> > Scirocco-l@scirocco.org
> > http://neubayern.net/mailman/listinfo/scirocco-l
>
>
> _______________________________________________
> Scirocco-l mailing list
> Scirocco-l@scirocco.org
> http://neubayern.net/mailman/listinfo/scirocco-l