I have been study the following diagram for the stock FD ECU from the FAQ list and reading numerous posts.

http://www.autosportracetech.com/RX-7/ecu.htm

Here are a few of conclusions:
1) Below 27% throttle, the ECU doesn't look at intake are pressure.
2) Above 27% throttle, the ECU uses are intake pressure.
3) Above 12 PSI boost, the stock ECU cuts fuel
4) Knock is only likely in high-RPM, high-load and lean conditions.

I would really like to know more about what the ECU is doing in each of these zones. The descriptions on the page I reference above are helpful, but really to course (decrease, increase, feedback). I changed the diagram from above to try to demonstrate what the ECU is doing.



Green = increase fuel
Yellow = feedback
Red = decrease fuel

So what do you guys think, am I understanding this correctly?