Chainsaw Repair

Lets see if I can get the thoughts in to words...

There is no fixed limiter as on the older saws in Autotune systems. It has its curve to follow, but will adapt as best it can after current conditions.
These current conditions are remembered and will change the curve if it works as intended.
So you can by your handling and work get different performance out of it depending on how settings are at the time.
Fuel systems inlet valve opens and closes a lot of times/second and follow a curve along with the timing.
They interact in a way...
There is rev control, fuel control that is to follow a certain set of parameters in different rpm ranges.

When I was told this (by the engineer in charge of 550 project) I found it hard to believe. An hour later we were ten guy's running spanking new saws in same wood cutting cookies to get a feel for the saw and prepare it for next day's felling.
I ran out of fuel first of all, had perhaps some more cookies cut, but ran out of fuel when the others was about 3/5 thru first tank.
I waited a bit and switched saw with another guy, fueled up and it ran very different. He said there was more power in mine and I agree.
5 min after "his" saw ran the same and we both ran out of fuel almost at the same time.
Our two saws ran out of fuel first, others some time after and a few quit before as it got dark.
I wish we could have hooked them up and looked at the settings...