boost...

[Journer]

i'm wondering how much boost i can run without having to worry about any damage...heres meh specs...

redtop sr20det w/ ~35k mi
garrett gt28 turbo
stock manifold
greddy elbow and 3" downpipe
3" test pipe
3" catback
stock s14 sidemount IC
HKS SSQV bov
apexi cone filter
stock intake pipes.. >_<!
koyo alum. radiator w/ 2 elec. fans
act stage 2 3puck (harsh eng.) clutch
all ex. gaskets are stock..thinking bout putting an s15 mani. gasket in..should i?
leme know if there is any other info u need to know

also, does anyone know the conversion for lbs/in2 to kg/cm2 ?

thnx

[S13Dreamin]

Fuel system...thats kinda important:wavey:. Inj size and fuel pump?

[wootwoot]

your limited by whatever injectors you choose, your turbo, and your side mount ic. i say 300whp max if you ran 550cc

[blu808]

You really dont want to go above 8-9 psi without injectors on a redtop with a t28. You should really consider a FMIC at that. Anything above that and you will want to install some injectors and might as well do a maf.

Then again, we tried to blow up my redtop, we ran it for 4 or 5 events with stock injectors, and no vacume line on the wastegate actuator. It was consistantly hitting 18-23psi, and the motor was perfectly fine when we pulled it apart. I know that the stock t25 wont make any power past 13-15psi but we just wanted to test the durability of the sr. Very impressive. Also dont think i would just go blow up a motor for fun, I allready had my new motor at my house for the next season. Besides my old motor was pretty tired anyways.

[Journer]

whoops, completly forgot bout fuel sys, lol durrr

i got a walbro 255lph pump..and stock injectors right now..thinking bout getting some 550cc...would get a fmic if had money..so thats in the distant future...

anyways...my plan is to hit around 400whp by the time i'm done with tuning...
heres my plans...tell me what u think:

550cc injectors, maybe 720s cuz they are only 50 bucks more :p
apexi safc II or greddy emanage
z32maf w/ adapter and all that crap
cheapest fmic i can find that is thick enough for what i want...
helix equal length manifold
already got some taka turbo lines in the mail :D
profec b or something...duno really which boost cont. is better, just herd good things bout profec b...
i have NO idea how much boost i would need to push to get 400hp, :/

this is going to all be done step by step..so..if u got any suggestions what i should do first..leme know :p

anyways..right now i am on stock injectors and ecu..all that crap listed above...plan on buying a boost controller around christmas..i was just wondering what kinda of boost i could get out of what i already have and roughly how much HP you think i would gain...

thanks for help :)

[S13Dreamin]

for 400 rwhp you will need the 720s, along with a bigger turbo :D . I would say go with the 720s, even if you plan on doing this in stages. Most importantly, you will need to get something to tune the car, which you also listed (I would go with e-manage personally). Maf and inj would be useless without something to tune with.

Order I would go in:
E-manage
FMIC
Fuel/MAF
Boost Controller
Turbo/Manifold