if you have about £600 would you buy either
1,WRX Subaru Upgrade Turbocharger 16G turbine, .60 a/r Garrett T04B 60-1 compressor
2, Subaru WRX GT Spec Header
3, PWR Intercooler & HKS SSQ blow off WRX STi

 

number 3

imo better to run slightly more boost through a decent cooling setup than more through the standard i/c

 

None of these on their own is enough m8,

You could get a bigger /hybrid rebuild turbo but then you need a re-map, and to make the most out of any power enhancing mods you will always need a re-map, apart from the exhaust etc (which would still benefit)

Just my opinion.

Anyway enjoy spending

 

I'd get myself a set of decent equal length headers. Smooths out the power delivery and will give you 15bhp and at least 20lb ft torque every time.

I think you should get the engines breathing right first as that just unlocks extra power thats already there before going on to modify/improve in other ways.

Ben

 

Pistons. Lighter pistons means you can rev higher for longer as it has less stress..

 

600 lottery tickets chance you might win enough for sti8 ppp......