Well, this weekend I got to try a manual boost controller. I still have the stock turbo and run my Smarty on #7. The HX-35 would get to about 20 psi max in stock form or with the Smarty on #7. Put the boost controller (thanks RJohnson ) on Saturday and now max boost (again on s/w #7) is about 31 psi Smoke clears a little faster now and truck seems to be a little quicker going by my (non-calibrated) seat o' the pants meter.
Very happy with it.
Technical article on how MBC's work (click here)

EDIT: just saw this on one of the pages in the tech article above and thought it was pretty appropriate to this site in general
~Rob

 

Glad the MBC is working good for ya. I put my boost elbow in when I did everything else, so I have no with/without comparisions, but I do know the that it's with it.

And that disclamer should be read by everybody. You gotta pay to play.