Correct A:F Ratio @ WOT?

[chris abreu]

One of my professors that worked at ford in engine development said that 
max torque is determined empirically for the most part and usually occurs 
between 12.7 and 13.1.  Just my two cents...or his two cents.
chris
At 01:02 AM 9/28/01 -0400, you wrote:
>Bruce,
>
>Ever hear the phrase "She ran real strong until the piston stuck/melted"?
>Tuning for best performance isn't necessarily the best idea...
>
>On a somewhat related note, I've always seen 12.5 AFR (0.85 lambda) listed
>as optimal for performance (Heywood etc).  Has anyone ever experienced
>different using *calibrated* sensors and steady-state readings?
>
>Matt.
>
>
>----- Original Message -----
>From: "Bruce" <nacelp at bright.net>
>To: <diy_efi at diy-efi.org>
>Sent: Wednesday, September 27, 2000 8:13 PM
>Subject: Re: Correct A:F Ratio @ WOT?
>
>
> >
> > You never,
> > ever,
> > tune to an AFR.
> > You tune for performance and note trends, or validate corrections made
>with
> > a WB.   In tuning you let the engine tell you what it wants, you never try
> > to force it to run where you **THINK** it should be.
> > A WB is just one more tool in your box, it, in and of it's self is
>nothing.
> > Bruce
> >
> >
> >
> > ----- Original Message -----
> > From: "Timothy J Burgess" <tjburgess at west.raytheon.com>
> > To: <diy_efi at diy-efi.org>
> > Sent: Thursday, September 27, 2001 6:36 PM
> > Subject: Correct A:F Ratio @ WOT?
> >
> >
> > > Now that we have the ability to determine the average A:F ratio using
>the
> > > WB O2 sensor, is there a typical A:F ratio to tune for @ WOT?
> > > In the TPIS catalog, they have a picture of the WB sensor & meter that
> > they
> > > sell, and there is a marker @ 12.8:1, so I'm guessing that that would be
> > > the value to tune for @ WOT.  Any recommended variance to that value
>when
> > > using a wet NOS system, compared to normal aspiration?
> > >
> > > Tim Burgess
> > >
> > >
> >
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