with supporting mods the T will make 450

boost wise about 1.6-1.7b?

i think you'd need an avcr to up the boost past 1.55bar on standard ecu

The map sensor needs changing.

i have gone for the rcm 450 on my RCM project car. the guys at rcm have told me its their best standard postion turbo but it does over produce power 450-480.

You can go 1.65bar without changing/adding anything.