i`ve got a version 2 STi RA that i`m hoping to get up to about 320 ish bhp, will i need to upgrade my injectors? ( i already have a frount mount intercooler, apexi ecu, uprated fuel pump and 3" exhaust) i think that i have 380cc fitted as standard.

Andy

 

Absolutely, get some 550's

 

Wouldnt that be overkill for what i`m after?

 

550's would be good but 440's off of a UK MY99/00 would allow fueling up to 340-50 so they would be fine and a little cheaper. I think, and I will stand corrected if I'm wrong, that 380's would struggle and not cope at your required level. I'm not sure if these would be a straight swap but someone will know.

 

dont know if the later ones will be a straight swap but v3 sti 440s will and they'd be enough for what your after a lot cheaper too,managed to get mine for £25 and that was for a complete v3 inlet manifold

 

Thanks for that chaps, I reckon i`ll go for the 440`s. i done a bit of research and i belive versions 1-4 will fit and 5/6 are fed differently but you can get adaptors to fit the earlier fuel rail.

Andy

 

you are right.

 

440's are stretched at 320, I'd go for 550's if it was me.