This might be better answered at ECU project.com. It would be cool to just take the maps from the 99 T5 Hot 9-3 and use them free on earlier T5 cars. Without all the pesky evap system stuff to worry about.
With the old stock HOT software, I'd run as mich boost as possible(quick spike to 17psi), and with 93, I'd see a ramp-up to 12* by redline...
To be 100% honest, I've never logged the ECU I have now.
It doesn't "feel" much different, though... which sort of blows, since I'm able to boost higher, quicker now.
The B204 and B235R do run much conservative timing due mostly to much high compression ration compared to B205R. In the later you do see 20+ deg at redline while the first to usally are around 11-14 at redline.
Bear in mind that the absolute value for timing does not really say much.
Timing is not likely to be directly interchangeable as there are too many variables that will alter it - these include turbo differences ( boost is not the same as flow) intake and exhaust differences ( again flow which effects EGT's) fueling, intake temperatures etc, etc.