A pulser t28 can produce 320 bhp @ 1.2 bar on a std Pulser,can run more boost, but dont make any more power, just torque, but the turbo's like to sqeel at 1.3 bar, with just A/F and zorst, bleed tap and fuel commander.


spec list-

Pulsar GTi-R: T-28, 60 trim 60 mm BCI-1 compressor in standard T-3 housing. 79 trim 53.8mm Inco T-250 turbine wheel .86 A/R turbine housing. Journal bearings.




A t28 compressor map




As for closed loop, you should do a rough map for part loads, then connect closed loop, that way if a problem happens with the closed loop system, it can full back on limp mod, on a good/ safe map to get you around.