what do you mean by show me?
for stage 2+ you need:
turbo back exhaust (actually it's the downpipe that's required) - milltek, bcs...
cold air intake - revo, itg, mtc, forge...
high pressure fuel pump - autotech internals, apr, loba, hpa....
and a remap
rs4 fuel pressure regulator
Apologies if I didn't explain myself exactly.
I know what components I need like you've listed, but what I don't really understand is exactly which exhaust bits I would need for it.
I.e I was after a link for exact setup that I could then simply order in the near future. Preferably millitek.