upgrade the injectors/fuelpump and afm, then u will see a big difference if remapped in realtime on a dyno...
if it's done right it will be better on fuel at cruise, better performance all round..

atm i would say u will have about 130-140kw atw around 12psi if the motor is healthy and u have a good exhaust /intake setup..
with a remap/inj/afpgrade u will be looking at 170-180kw safe tune..

yeah i agree with tappet,

my ute just got Dyno'd n it's running 191kw at a safe tune,
i'm running a T3/T4 turbo and a mircotech ecu though...
boost starts at around 2500 - 3000rpm at 9psi up to 13psi at 7000rpm...

Hi Coops
I am running the chipped ecu and a bigger fuel pump and I have seen 163rwkw on the dyno at 15psi.

The chip changes the ignition and fuel maps to better accomodate the higher boost level and T28 turbo.
Matty