What does stoich mean?

[Gary Derian]

With low compression and high octane, optimum spark may be less advance than
the detonation limit.  Use performance for WOT settings and economy or
vacuum for part throttle.

Gary Derian <gderian at oh.verio.com>
>
> sooo start the spark table FLAT and tune the fuel for
> EGT(substituted for o2, the "stoich" link in this thread), then
> advance the spark until detonation then back off a click? <??> I may
> be starting way too low on darwin's scale for you to want to go on
> and I don't blame you.
>
> the calibration values that the manufaccturer has arrived at are done
> with formulas then tweaked with dyno's or what??
>
> > Nope, and nope.
> >
> > Tune against the clock, and as little timing, as consistant with time,
and
> > fuel rich (slighter than best time).
> > If you run right at detonation, then any error might force ya into
detonaton
> > spelled $$$$$$$$$$$$$$$$
> > Bruce
> >
> >
> >
> > >In a message dated 8/19/99 12:57:52 PM Eastern Daylight Time,
> > >dzug at delanet.com writes:
> > >
> > ><< So if given a choice to either
> > >
> > > a) increase spark asvance until (just before) detonation occurs
> > >
> > > or
> > >
> > > b) decrease fuel delivered until (just before) detonation occurs
> > >
> > > economy minded people choose B and performance people choose A >>
> > >
> > >I think its a balance of both..as much timing as you can get away with
and as
> > >lean as you can get away with. Theres definatly a balance of
timing/fuel that
> > >makes the most power. Its a matter of finding that sweet spot in your
car.
> > >Everyones car will respond similarly, but like a different combo....a
little
> > >tweak.
> > >
> > >Thats my useless opinion.
> > >
> > >Jim
> > >
> >
> >
> >
> ~~~
> Dave Z. www.delanet.com/~tgp