I cant agree with jett any better by him saying u cant beat 15 years of research.
Look at the materials we have now,HKS are expensive yes i know,but bolt it on and i bet u smile ear to ear,u are paying for all the work thats been done,no bullshit,u know its gonna be a good option,no creep,no surge,none of the problems,
I agree with jett on the GT2871R,You may get the shits with being onboost all the time but u want streetability right,These cars are not like nissans where the final drives and ratios let u go back to 2nd at 70-80 k and fuck off..Beleive me ive failed with my jaw open many a time to an s15.
Put a T3/4 next to an S15T28,years apart and literally leauges apart in performance.Technology is the word.
I dont know as much as many ppl on the forum about turbos,but when my mates s14 makes 320 Rear wheel Kw on 13 pound with basically a HKS BB turbo,it opened my eyes.the power wasnt made by cames or revs or boost,just the turbo.Pretty impresive.what ever choice you go with will be dependent on your budget,But newer will be better.
Personally i dont think the 14B in stock trim is all that good or early to come on,I put that in BOLD because i know ppl will shoot me down in flames for this statement,and i think theres nothing worse than someone who says they run a 14B and do 11 sec passes without explaining the full setup,A/R Trim,Ind/Exd Sizes etc.(no diss to J STYLE or anyone else who's played around with the standard stuff),
But the first time i heard it i was like what the fuk,only to discover the only thing left 14b about it might be the housing or some other small thing like that.I guess the point i make is Newer stuff will make more power at lesser or equal revs etc...
I think a good upgrade would be a turbo that is all in around 3300rpm and pulls to 6600-7000rpm..assuming u have stock cams,which are aimed at this area.Ball bearing hks 2530 would go close to suiting this right? But then i guess the spoolup can be accounted for by how good the inlet and exhaust manifold is.
Has anybody fitted a hks 2530 to a 4g63?