Just for general interest, I figured that I'd post dyno charts of three turbos for comparison:
1) TD04-15G (GReddy turbo) on a 1.6 at 8-9psi
2) T3 Super 60 on a 1.6 at 9psi with boost control issues
(hence the dip in torque)
3) GT2554 on a 1.8 at 8psi with fuel issues at the time (again accounting for the dip in torque)
First graph is just HP showing very similar results.
Second graph shows torque.
Interesting how similar the GReddy and T3 super 60 really is (as already pointed out by braineack).
You can really see where the 0.2L of extra displacement + smaller turbo really helps that GT2554 spool and create lots of torque early on.
Funny how we all have little snafus right around 4k rpm.