EGR stuff

[A70Duster at aol.com]

<< Ok.... so the inlet manifold temp goes up but the mixture is diluted by 
the 
 exhaust gas from the erg. I would have thought that this would have leaned 
 the AFR if anything causing detonation or isn't there enough O2 left in the 
 exhaust? >>

Leaning the mixture (via the EGR) would mean adding more O2, but the EGR does 
not do this.  It adds N2, C02 and H20 (vapor) to the airstream of N2 and O2 
and HxCx.  The correct A/F ratio has been determined (carb or ECU), the EGR 
just "thins" the mixture.  I left the small amout of Argon out as not to 
confuse the issue.

Hope this helps...

Mike
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