right now i'm just start tuning my A4 1.8t quattro and hope to get some good advice about what should be done next, what's the best part, troubleshooting.....my setup right now is like this:

Audi A4 1.8t quattro 2000 tiptronic
giac chip
running at 20 psi
denso iridium spark plug
custom 2.75' exaust with 6' oval tip
brembo cross drill disk front
EBC green stuff brake pad (front / rear)
front strut tower bar
neuspeed rear strut bar with sub frame rehenforcement
altezza black rear taillight
RS4 front grille
17' MAK matrix racing wheel
carbonio air intake (on is way)
neuspeed Xtreme 1.8T Turbo Intake Hose (on is way)

right now I'm looking for some suggestion about what should be done next...any advice ??