what size injectors?

[juanito]

its my daily
safc II w/ maxima MAF
im not planning on going over 250hp
yes, i have fuel pump!
i have stock red top and i want some bigger injectors, what should i get? 550cc? and where can i get some for the low low?
thanks

[v-empire]

stock injectors are fine.

no need to spend your money.

[omgwtfbbq]

With all that earth-shattering horsepower, it is going to at least require 10,000cc injectors.

[omgwtfbbq]

You may want to invest in a door mount or sunroof mount intercooler also. Maybe both? Rear bumper mount is entirely too expensive.

[wantboost]

its my daily
safc II w/ maxima MAF
im not planning on going over 250hp
yes, i have fuel pump!
i have stock red top and i want some bigger injectors, what should i get? 550cc? and where can i get some for the low low?
thanks
the things i highlighted strike me as odd. if you are only going for 250 why do you need a diff maf or injectors. just to say you have them?? maybe i am missing something :thinking::screwy:

[juanito]

well, i did some research and people said that with a z32 maf, a better FPR and some bigger injectors i can get some more horses with the stock turbo, u dig?

[wantboost]

so your goal is more than 250?

[Tire]

I dig sir. Z32 maf, safc, and boost controller should do the job for 250. easy.

[juanito]

my goal is 250 bc im not planing on changing turbo, so this turbo only goes to about 260ish with the right setup...

[wantboost]

ahhh i see, you want to get the most you can out of the stock turbo. now it makes a little more sense.....

[juanito]

haha yep! i did my research;)

[NISMODUDE1988]

iam running about 2300CCs on my rb20 cause iam ballin like that

[hellfire]

370cc injectors should support 250hp. Just turn up the boost, and log the IDC's as you do the pull and make sure they don't go over 90%ish.

Tyler

[wantboost]

370cc injectors should support 250hp. Just turn up the boost,

Tyler

thats what i thought......

[juanito]

yeah but i dont have a boost controller yet, and i dont think ima get one for a long time, maybe a manual one

[Capt._Ron]

Another option is the 480cc injectors from the s15. You can buy them directly from nissan although that would probably be expensive. A manual boost controller is good cheap way for higher boost but as you build your car more you will find that you wish you bought a nicer boost controller to start with. I still run a mbc but I worry about turning the boost to high because mbc's will cause a boost spike that only gets worse as you boost more.

[babowc]

Hm.. dont you need some kind of boost management to increase power?
Fuel and air are necessary for more power.
thats where fuel injectors and mafs come into play.

but.. without managing boost, i dont think you will get anywhere.
unless you can really really fine tune the hell out of the stock setup and somehow get 250 @the wheels.

[turbology]

well, i did some research and people said that with a z32 maf, a better FPR and some bigger injectors i can get some more horses with the stock turbo, u dig?

no. I would like to find out who claim that.

MAF - calculate air flow
FPR - to adjust +/- your psi in your fuel line
Injectors - to control fuel

if your air flow, psi, turbo effieciency, air temperature and exhaust system does not change, HOW you can more horse power ?

With 250hp (assume whp), stock injectors is archieveable along with stock MAF and FPR.

[hellfire]

With an Adjustable FPR you could turn up the psi, which would allow more fuel to be shot each time the injector opened. Thus they would become a larger injector.

But.. You would still need to turn up the boost.

Tyler

[turbology]

when turn up the boost, to fix the AFR, you adjust your FPR ? LOL
I bet you don't have a turbo car yet, or rebuilding it.

Get an engine management with boost input. Then you can leave your AFR alone.

[hellfire]

Oh my. Are you serious? I don't have a turbo'd car?

What do you think an adjustable FPR does? Besides obviously turning up and down the PSI, what do you think that effects. I'll let you think about it.

And engine management with boost input?! LoL..
You could have that all you want, and you still need to tune your car to whatever A/F you wish.

You don't "Leave you A/F alone" You create your own A/F. Based on the amount of fuel you add or subtract using whichever controller you wish.

And I'll help you with the question I asked your earlier. Read the description here.
http://www.trackspeedracing.com/site/788637/product/BM-FPR

Next time.. Before you insult someone, make sure you know more then them.

Tyler

[babowc]

when turn up the boost, to fix the AFR, you adjust your FPR ? LOL
I bet you don't have a turbo car yet, or rebuilding it.

Get an engine management with boost input. Then you can leave your AFR alone.

I had to read this a couple times before I understood what he you were saying.

You turn up the boost, to get good AFRs, you adjust your FPR.
With an Afpr, you can crudely tune your AFR by adjusting fuel pressure. Ever wonder why people you rrfpr or afpr to tune on a budget? I'm sure you know by now!


BTW, you have officially been pwned.

[turbology]

The purpose of FPR is to maintain an optimum level for fuel injectors operation based on intake manifold pressure.

In most turbo application, FPR should be rising rate according to boost.
And usually every 1 pound of boost , increase 1psi on fuel system.

When you turn up your boost, you should re-tune your car, not your FPR.
Increasing FPR will temporary solve you lean condition, but I won't call it a "tune"

Before you reply on someone insult, reseach, study, and discuss. And learn from it.

GOOD LUCK !!

[babowc]

like i said.
its a crude method of tuning.
rrfpr.. afpr.. 8:1, 12:1, etc. etc.
crude.

not recommended. crude.
i cant stress that word enough, crude.

[turbology]

I won't even think to use FPR to fix my lean/rich condition.
Is not crude. "Dumb " is a better word.

Have you see any real tuner use FPR to "tune" vehicle ?