Re: 1/4 mile results

[Anthony Pelletier <vwnuts@yahoo.com>]

Congratulations Jason for the killer 1/4 time!  14.2
is epic!  (btw you have 7/10s to go before you beat
Johnny's (20v) best time(13.5)

I think I get what Jason is saying here.  Because of
the heat and the altitude the air was less dense,
thereby changing the fuel mixture.  When the full
throttle switch kicked on and the engine went into
open loop the mixture was just too rich.  Unplugging
it leaned it out a bit and allowed the o2 senser to
adjust to maintain a balance.  I would have been
curious to see if adjusting the fuel mixture (with the
3 mm allen) would have had any affect on it.  If you
readjust in the conditions you were running at the
full throttle switch may have been more useful.  
I always set my cars up at night (partly because I
work in the day) and partly because thats when they
run the best.  And my car really hated hot humid days.
 I'd be willing to bet that I can loose almost a
second 0-60 between 9pm and High noon on a hot day.  

14.2 Hmmm.. The 2.0 is on the way to the machine shop
now all I need is a MKI shell...  

Tony


>     i can tell you that as soon as the switch was
> turned off, temps outside
> stayed quite hot, and i yanked a 14.33.  i'm sure
> that there were other
> fctors involved, but one thing is for sure, it
> didn't take away from my
> performance.
> 
> >   What you are doing should make the mixture
> leaner than what is needed
> for
> > maximum power. Which is why I am curious if you
> have found different
> > results in reality with this setup.
> 
>     the theory that my friend had is that the car
> was running so rich in
> open loop, so he wanted to see if he was correct. 
> he was correct.  the
> temps were really very high, and i'm sure that the
> track is kinda high, so
> the volume of air being jammed into the motor was a
> helluva lot less than if
> it were cooler outside.  so, by turning off the full
> throttle switch, the O2
> sensor was allowed to affect the mixture right up to
> 7000rpm.
> 
>     at least this is what i think was happening.
> 
> jason
> the mad bastard
> 
> 
> --


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