Up Up and away

[Ade + Lamb Chop]

At 05:00 08/10/99 -0400, you wrote:
>Now I am not saying that a Pulsewidth[MAP,RPM] table will not produce a nice
>clean precise fuel mixture for an engine.  It does.  But,  the MAP and the
RPM
>only tell you how fast the air in the intake manifold will travel into the
>cylinder and not how fast the replacement air moves that is drawn into the
>manifold past the throttle plate.  Yes,  on average a higher altitude will
>create an average lower MAP and lean off the mixture a little;  but not
enough
>simply because the Dyno runs for that MAP and RPM value had a different
pressure
>outside the throttle plate and the replacement air moves at a higher
velocity.

Right you have sold me, BUT (very big but) How bad is the effect? It cannot
be that bad other wise cars with Carbs would suffer problems wouldn't they?
Unless you are wrong :-)

Ade