Ok, I think I figured out the "link scan to tune" feature. I was logging data, and playing with a tune table, and saw a "grey" box jumping around the table like a jack russel terrier, and was like THAT'S how that works!
Anyway, I decided to take a look at A4105 - Main Injection Pulse, and it has me confused. The columns are fuel rail pressure in MPa, right? And the rows are mm3 injected at that FRP, right? Well, that grey box never leaves the 190MPa column. It just bounces around in there, even if the FRP (desired AND actual) are at ore near 30MPa (for example). Am I missing something here?