No thanks guys, I think I'll eventually be going for a GReddy Profec-B spec II as well, as I hear nothing but good things about them.
Oh, I haven't yet done a "recording" of the boost curve up the rev range, but when I checked the peak boost last night after going for a drive, it's hitting right on 0.8bar (which is 11.76psi according to my calcs).
I've also noticed that it takes a lot longer for the turbo to cool down after a drive, so this leads me to two theories:
1. I'll have to check against the old standard dump pipe, but for now I'm assuming that the temp sensor has been placed in the same spot, and if it IS in the same spot; then
2. it looks like the turbo is now approaching that zone where the extra boost is no longer efficiently adding to power, and is now just added heat.