yes indeed.

Combustion chamber pressures press on the rings and force the rings into the walls of the cylinders thus wearing them together. The better the seal created by pressure the better the rings and cylinders fit together.

 

Very surprising news and thanks for the info!!
Wish I knew this when I was putting around at ultra low rev's trying to break in my bike. It took FOREVER. Kawasaki threatened something about molybdenum coating on the pistons that could be damaged by high initial rev's before fully broken in. I didn't trust johnny YouTube, there, but I trust your judgement and experience.

 

Ya, molybdenum coating is already nice and cured well before they assemble the engine. It won't get damaged any more during break in than after.

 

you can change dyno numbers simply by changing tire pressures.

 

And tire diameters and weight, etc etc.

It's so easy to skew numbers. That's why i laugh when people come on here and say "omg, i re-dynoed 2 months later and lost 5hp, what happened? is my car going to blow up??".