Jay Honeck wrote:
Can we agree that idle power/full power engine management will cause
more wear and tear (AKA: "Damage") to an engine than steady-state
operation?
No. Why?

I'm no thermodynamist, but I believe it's commonly accepted that
taking an internal combustion engine from steady state/low RPMs to
full power/high RPMs (as one would repeatedly do during touch & goes
and engine-out practice) is more harmful to the engine than simply
steady-state/mid-RPM power settings.

A rough analogy would be to think of drag racers versus rally car
engines. One lasts 20 to 30 seconds, the other lasts 1000 miles.

And one makes more horsepower PER CYLINDER than the rally car makes in
total!

Matt