[t.storbeck]

Chip
Intake
3" downpipe + high flow exhaust (I hear 2.5" is the best, but I run 3")
Frontmount intercooler

Beyond this it is just better to go with a big turbo setup, which will work with the mods you have already done.

For a big turbo, I would skip the APR kit and build one based on the eliminator series from garret:

Upgraded injectors, maf, intake pipe, and big turbo software... should put you in the neighborhood of 300hp.

*sigh* a man can dream...

What kind of power are ya putting down with that setup?