Bump for you guys having the same problems....
I got mine all worked out, turns out it was just the settings were a little messed, so check your settings.
An excellent tool i used to do my settings and fully understand my profec was
http://www.sr20forum.com/showthread.php?t=86098
That pretty much answered all my confusion about the unit and made tuning easily. If you follow those steps like I did you shouldnt have any problems.
Got mine running a steady 10.5psi low and 14.5 ish high.
Good luck guys.