The other axis is RPM

Got it all figured out  , I appreciate the help guys.  From what I was reading here and around S4Wiki, I upped the boost by 10% on everything to still give it a nice little boost curve that will still taper down.  I know I need fueling and that I'm going to add a little bit of timing retardation, but is there anything else that I should be aware of? I'm thinking boost PID needs to be changed?

Also, here's a gem from Rick that you should read: http://nefariousmotorsports.com/forum/index.php/topic,638.msg5419.html#msg5419

I originally did what you described (i.e. raised KFMIRL by a few percent across the board). I did this because there was another person on this forum who posted a tune which did the same and because my interpretation of the S4Wiki (nyet's site). I don't recall specifically what on his site made me think this was necessary. Perhaps I'll go look at that and see...

Anyway, the issue that I had was with a stuttering/jerking during partial load. After reading Rick's post I reset KFMIRL to stock and the stuttering went away. I've noticed no other affect from this change; just as his post suggests.