Totota Glanza 1.3T tuning?

[silverzx]

My friends just purchased a Glanza which is more or less completely standard except the exhaust.

Anyone know what the general direction is with these as far as tuning goes?

I imagine its something like:

1) Exhaust
2) Air Filter
3) Engine management
4) Injectors & fuel pump
5) Turbo
6) Forge internals
7) Bigger turbo

To be honest, doesn't feel any quicker then my T25'd XUD. Timed 0-60 in 7.8 seconds.