What Injectors + Afm To Get For My Rb25?

[islade]

Hey guys,

I just got my car dyno tuned by Gavin Woods, he's an absolute champion.

Car is currently putting out 315hp at 0.9 bar.

Specs are:

1993 RB25DET

Apexi PowerFC

Bosch 040 Pump, Tomei Fuel Reg, Stock Injectors

KKR560 Turbo, front mount, stock AFM, Greddy Profec B Spec II

He said he could only run 0.9 bar of boost as the AFM was maxxed out, and injectors were at 92% and he doesn't like going above 90%

So... I'm gonna save up for injectors and an afm, and had a few questions....

1) What injectors and AFM would you recommend? I'm not planning on eventually running any crazy power, just wanting to fix whatever's "holding back" the engine

2) how much boost would you run on a stock engine? (140,000km) The turbo seems as though it would be happy to run 20psi+ but i'm guessing the engine wouldn't last

3) Are there any other bits I would need or should get? EG: will new afm need an adapter for the existing pod filter or wiring in a new loom, or any other bits that should be changed at the same time?

4) Where should i get these bits from?

Thanks guys

Isaac

Edited October 18, 2009 by islade

[Stealthynsa]

i pretty much have the perfect information on injectors atm in my post just below yours

and the afm is covered heaps here already, get a z32 afm.

and for how much boost, lol thats covered alot to..

ive learnt to use the search bar since my first post otherwise u look like a complete tool.

Edited October 18, 2009 by Stealthynsa

[R31Nismoid]

1. Z32, Nismo 555's

2. Who knows, more about the tune than anything.

3/4. Nengun, greenline, any of the forum traders as well. AFM will be larger, might need a new adapter.

Nasty turbo though the 560

Also, once you put in larger injectors, put the factory fuel reg back on, you do not need the Tomei one.

[JonnoHR31]

z32 afm is the same size as the standard rb25 afm, bolts straight in, its just the wiring thats needs to be modified

[dori34]

If you're really on a budget then look at S15 SR20DET injectors, they're 480cc and are a cheap upgrade.

[islade]

Thanks for the advice guys,

I have read either 440cc or 480cc for S15 injectors, guess I gotta do more research

What's the reason for returning to stock FPR if i get bigger injectors? I realise I may not need the additional pressure, but can't it just be turned back down?

Isaac

[l0WRB]

how does the boost come on with the kkr560? what rpm etc.

[islade]

how does the boost come on with the kkr560? what rpm etc.

It's fun from 4000RPM, not sure exactly on the boost coz i got a Greddy Profec B and i don't look at it much.

I'll post up a dyno graph in the next day or two