control algorithm for MAF setup

[Johnny]

Dave Williams wrote:
> 
> -> >All the documentation I've seen on "family production cars"
> -> generally >indicate a 14:1 ration between air/fuel.
> 
> > okay, I guess I asked for it .... obviously stoich (14.7:1) is
> > "best".  Let me re-phrase the question.  What is the leanest
> > that is recommended to run and still avoid detonation ??
> 
>  "Best" for cars equipped with a catalytic convertor.  Various
> references from the pre-convertor days show something around 16.5:1 as
> closer to optimal, but note most OEMs go rich to ensure the vehicle
> would not go lean under unusual operating conditions.
> 
>  Taylor et.al. indicate SI engines can be run lean to the point of
> misfire at cruise, though I'd want to watch EGT while doing so.
> 

EGT should drop when you get on the lean side. Don't know what it does
when it starts to misfire though, I haven't ever had the.. er a money,
to try that test. Sounds like a good experiment for that old Briggs you
got laying around.

-j-