sorry but do you not have 286 bhp? And aren't you 18? Who are you insured with as i know when i had mine it was dear with just a remap, they went loopy when i suggested changing the turbo!

^^^^^^^^^

Just to echo that, why would you want to upgrade if your running *cough* 286bhp? And how have you managed to get that figure?:think:
 
So what do you run up a strip Sam? I think you could be suprised and i think i'd embarrass you round a track, but thats neither here nor there, i was purely asking why 'if' you have 286bhp are you wanting a ko4?

Anyway i'm not dissing cupra's as i've had one and want another one so there!
 
As your asking about ko4 power i presume you have a ko3s and with all the appropriate mods so around 230/240 bhp.
Best bet is an eliminator or ihi both kits can be got from lots of companys for around 2k to 4k.
ko4 turbos on ibizas need custom made DP and maybe charge pipe + all the ihi bits anyway like injectors and fuel pump and tip.