Questions: The things I think about at work

[PanzerSD]

Someone once said, in this forum that "our engines are governed to about 5300RPM"

Governed by what? something internal to the IP or by the physical design limits of the engine?

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When rebuilding an engine (617 spacifically) is it absolutely neccessary to remove or replace the prechambers? where can I buy Pre chambers and how likely am I to need to replace mine at 440,000km?

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and finally, some clarification about wastegates.

if the sctuator is set to 18PSI that means that the wastegate is FULLY open at 18PSI? is there any wastegate valve movement approaching 18 PSI?
would this amount of movement be more if the wastegate were set lower?

the REAL Question: Does a BOOST CONTROLLER block ALL signal pressure till it's set PSI? or do I still get that valve "flutter" lag?