Question about WOT table in $8D bin

[Bruce Plecan]

Gm is using it to *shut* the motor down *gracefully*.
If they use rpm folks whine about tachs being off,
rich is cheaper on warranties, they run rich to *not make* HP.
Your running that rich and trying to work the motor there.
Big difference.
It'll be real easy to see who's closer when you tear her down.
Too cool of cooling system (80C  / 160dF) with too hot of plug, running rich
can look just fine.  This is why I harp about things.
Justifing something cause others do it gets no where in my book.
Not being harsh, or telling you your wrong, just there is an alternative
that's alot easier on parts.
Also, have said rich and too much timing feels fast yet folks still do it
all the time.
It just feels so good, folks do it.
BTDT
Bruce
  Like I used to tell customers, "don't make a hoot's difference to me,
  my car runs fine".

> Bruce,
> I don't think its as bad as what you are saying.  Please - hear me out.
>  I said that the calculation shows that I am running 10.16 AFR.  This was
> at 5600rpms and a coolant temp of 80deg C.  HOWEVER, the stock AUJP bin
> has a PE modifier of 7.8 at 4000rpms in WOT %Change in AFR vs RPM and a
> modifier of 22.7 in WOT %Change in AFR vs Coolant.  This results in a
10.22
> AFR.

> Now, I am NOT running 10.16 everywhere.  I just picked the highest point
> of the curve and reported that point.  I also picked the highest point of
> the AUJP curve and reported that.  Again, the formula I am using is the
> one previously supplied here on the list ....

> ( 1  -  (( RPM Mod  +  Coolant Mod )  /  100 )  *  14.7

> I am not concerned about the fueling.  I am close to 128 at all points
when
> driving.  I spent significant time on the VE curves.  The WOT %Change to
> AFR tables are modified from stock ... but, no so much in the levels but
> more as to the shape.  The MiniRam doesn't need as much fuel at 4000RPMs
> as compared to the TPI.  However, it does need more at 5600rpms.

> Tim


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