I didn't notice any difference with the adjustment.
Maybe it only works when the actuator gets old and weak???
We did it to the SSEi, and to the GTP. It didn't make a noticable difference on either, but it couldn't have hurt anything. What it is really supposed to do is make it so it closes sooner so you get boost a millisecond or two earlier and it is supposed to open later so you have boost for a millisecond or two longer. It isn't really supposed to give you more boost as far as I know. It is kind of useless, but it takes like 2 minutes to do, so why not do it.