You should go for:
K&N Panel filter
Walbro 255 pump
NGK PFR 7B plugs gapped to 0.65
2.5" Decat downpipe
2.5" Decat / Non-resonated centre
Remap
That'll be your stage 1 sorted. i went from 280bhp to 325bhp with that lot in the P1 many moons ago...
__________________
|