[Diy_efi] false myths

[Michael Richards]

> BTW, these are the same guys, a person on this list, whom I lost most
> of my respect for a couple of years ago, and I've nicknamed 'bear',
> not to long ago labeled this group 'parrots'.  LOL.  They have, with
> today's technology, actually monitored the combustion chamber of a
> live, operating production engine, collecting and logging data in the
> process. How many 'parrots' do you know, have done this?  Millions?

Only one person I know of outside OEM test labs... I will see if I can 
get you some datalogs of a lean misfire. This is on a one cylinder test 
engine but it's being developed as a test bed for some detonation 
detection work we're doing. You will see the cylinder pressure go up 
from the initial ignition and then stop short of a normal pressure 
curve accompanied by a jump in HC emissions. This is absolutely nothing 
new. 

Sometimes you also see the EGTs going up during enleanment because of 
the slower and less consistant flame front. This is not an increase in 
total heat as someone else pointed out there is less fuel available 
than in an ideal mixture.

-Michael
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