ADVICE NEEDED FOR HIGHFLOW TURBO

[I <3 Judd 0kw]

hey guys,i have had my rb25 highflow turbo from aaron at sliding performance in sydney on my car for about one week,its quite laggy at the moment but that is normal for a highflow,boost kicks in at about 4000rpm,but when it kicks in it hammers.just want people to advice what mod i should get next for the turbo.my car is a r33 gtst,current mods are,hybrid front mount intercooler,pod filter,cat-back exhaust,dump pipe,highflow cat and boost tee,at the moment running about 14psi.the highflow is rated at 260kw at the wheels,which is about 350hp at the wheels,the turbo can run 19psi.i have stock injectors,fuel pump,ecu,air flow meter and bear in mind the car is auto.i have about 195kw at the wheels at the moment,so i have 65kw at the wheels to go with the highflow.should a get a apexi SAFC,injectors,fuel pump or a aftermarket ecu,i have thought of getting a "lumpy" rom,i dont know if he can do it for a auto,or get a biki rom from speedweeks.my goal is to get 340hp at the wheels and to run a 12 second quarter:wave:

[Passage GT]

fuel pump injectors power fc and z32 afm
do it

[beefcake]

high stall an shift kit, takes too long with factory turbs to spool up

[I <3 Judd 0kw]

high stall an shift kit, takes too long with factory turbs to spool up

for sure,that is the only thing bad about having a auto,but soon as i get that,i.e having something like a 2500-3500rpm highstall and setting the boost to about 10psi before leaving the start line would be good,with that running a 12 second pass would be more achievable,the turbo can run 19psi so running a mid to low 12 sec pass should be achived:wave:

[RB20ZED]

dude pretty much all of the above, shift-kit with a higher stall maybe a 3g stall would do, get a power fc and z32 afm or keep ur own there the same size just the z one is more tunable, smash in 18 or so psi and see what happens. probably need a fuel pump and maybe inj to get to your goal but seen a few 33's do over 350 without inj. cant see if you had good tyres why u couldnt get a 12 sec pass. If you want a better more streetable id get rid of the dirty highflow and smash on a gt-rs and boost about his. Alot more responsive and good for nearly 350 atw

[evil_weevil]

what sort of injectors would you be looking at?
And cost?

Cause currently I've got an FC, and fuel pump - "looking" at getting a hi-flow soon

[evil_weevil]

bumpity bump?

[CyberNetiC]

go and buy injectors.

go and buy a fuel pump.

this is pretty much the list if you upgrading your turbo, everything left is all about tuning, which you've got sorted.