Blow off valve vs. By-pass valve (semantics aside)

[Ken Keith]

Jörgen Karlsson <jurg at pp.sbbs.se>
> 
> Flapper door air meters are fast enough to respond to a normal shift but
> idle position on the throttle often cuts fuel anyway as on the CIS
> implementaion.

How does idle position on the throttle cut fuel?  Is it with the 
throttle switch?  So, it only works if you completely let off the 
throttle?
 
> > Wouldn't it have less power than if it weren't experiencing that
> > temporary rich condition?
> 
> No, the right mixture is best for power.

I should have rephrased my question.  I think the answer you gave 
would mean a yes to my question, or my intended question.

Power output would be higher, if you did not have the richness 
spike, and the air/fuel ratio stayed consistent throughout the shift.  
(meaning both the air and fuel would be reduced when the throttle 
was lifted, while staying at the same ratio respective to each other).

Ken