Interesting blurb on Speedvision

[Len Sabatine]

     Real World , High Humidity conditions have a direct relationship in 
reducing
     tendency to detonate, at least with Gasoline. Of course , other tuning 
factors
     need to line up as well.
     Len

>  When I did the Saab LH jetronic course we were told that the humidity
>contained H2O (duh!!) but that the water vapor dissociated in the
>chamber
>giving extra oxygen.
>  I think it might also be natures water injection system at work
>
>"Flanagan, Steve" wrote:
> >
> > Bruce,
> >
> > What do you think is the reason for this?  It seems to be the opposite of
> > what you would think. Being a pilot I always prefer a Cold, Dry, High
> > Pressure day, the wings love that kind of air.
> >
> > Cold air is more dense: Good for power.
> > Humid air is less dense: Bad for Power (or is it????)
> >
> > Is it the 2-Os in the H2O that you believe is the reason a turbo likes
> > humidity?
> >
> > That would then lead to the water injection debate.
> >
> > Steve F
> >
> > -----Original Message-----
> > From: Bruce [mailto:nacelp at bright.net]
> > Sent: Saturday, August 19, 2000 11:56 AM
> > To: gmecm at diy-efi.org
> > Subject: Interesting blurb on Speedvision
> >
> > On speedvision the other day they were talking to some folks running Pro
> > Comp..  One of them was an actual tuner.  He was going on about needing to
> > do compensations for Baro., and heat.  Then mentioned even more important
> > then that was compensating for HUMIDITY.
> >   And some folks called me crazy when I mentioned it...
> >   Oh well, I rest my case..
> > Yes, a good calibration, has a IAT, or MAT correction for fuel, and TIMING.
> > The more I look at things, I think GM fudges the IAT/MAT in a way to comp.,
> > for all the lil things.
> > That's my opinion.
> > Bruce
> >   Cold air, with high humidity are a turbos best friend.
> >
> > 
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