"Peter Duniho" wrote in message
...
[...]
Once the mixture is "in the ballpark" on my airplane, whatever change
occurs in MP isn't enough to prompt me to readjust the throttle, I can
tell you that much.

Upon re-reading my own post, I'm not convinced the MP would change at all in
this situation. MP is simply a measurement of the air pressure in the
intake manifold. It *ought* to be, as far as I know, strictly a function of
engine RPM and throttle position. I wouldn't expect fuel flow to affect it
at all.

So I think that part was in error. It's not that the change is too small to
notice. It's that it just doesn't exist (not counting some completely
inconsequential effects that alter the pressure due to temperature and
density changes as a result of the fuel).

However, I still don't see anything inconsistent with the table you posted.
It may very well be that the only difference between the "best power" and
"best economy" power settings is fuel flow and engine temperature. I
certainly don't see anything in the table to suggest otherwise.

Pete