if quick spool up is what ur after, then DON'T get a PE1820 as it's laggy as hell.
tested a new turbo called Momentum yesterday and the thing actually spools up faster than my previous VF35 (and we know VF35 has one of the fastest spool up around)! Manufacture claim it has higher & steadier top end than the VF34 but since the turbo is new I didn't wanna push it to test the top end, but will keep ppl posted.
if anyone wanna find out more about this new turbo (there's only one in perth and i got it
), ring up Craig or Rob @ SpeedWorks and they will sort you out.