Any improvements?

[g40_will]

Stage 4 supercharger
PSD Toothed belt kit with new 65mm pulley
G60 injectors
induction
De-wedged throttle body
GT inlet
Powerflow system
Boost return mod
G-werks chip to suit modifications

What would you suggest i could get to improve the performance and BHP?

[Dan]

I would spend money on making sure it's setup right and then transmission & chassis mods if there arent many done yet.