I wrote up an article to explain AVCS and go over some of it's benefits and functionality.

Subaru AVCS - Active Valve Control System - Explained

Let me know if you have any questions, spot any errors, or what you think of the article.

I'd also like to know what else you feel needs to be added.

 

Why does the chart not include JDM motors?

 

I'm going to add them in. Finding data can be a bit conflicting at times.