Larger injectors for the RB25

Discuss the RB20, RB25 and RB26 series engines.
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jrd450r
Posts: 194
Joined: Tue Oct 03, 2006 10:49 am
Car: 1990 RB25DET S13

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Does any one have a list of some sort or an idea of injectors that came off of other cars that will fit on the rb25 and what their flow rate is? I heard that the supra and rx-7 ones do is this correct? Is there specific models and years that they have to be off of? Thanks!


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eh?
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Joined: Sat Jan 24, 2004 2:26 pm

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Just buy my injectors :D

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virus77
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Joined: Thu Mar 25, 2004 9:43 am
Car: 95 S14, 71 240z, 97 e320

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Im running 05 USDM subaru sti injectors.... 525cc

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jrd450r
Posts: 194
Joined: Tue Oct 03, 2006 10:49 am
Car: 1990 RB25DET S13

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Wa
virus77 wrote:Im running 05 USDM subaru sti injectors.... 525cc
I have heard of running these, what kind of tuning system are you using to control them? did you have to add a resistor to them? And what kind of HP are you able to make with them before they start maxing out. Sorry for all the questions i am just trying to figure out what exactly I need to get to I can get the project install goin.

l0nestar
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Car: 1993 Nissan 250SX
2004 Toyota Altezza
1963 Chevy Impala SS
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virus77 wrote:Im running 05 USDM subaru sti injectors.... 525cc
Direct drop-in replacements.STi "Yellow's" I considered installing these while I had my rail apart.

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virus77
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Joined: Thu Mar 25, 2004 9:43 am
Car: 95 S14, 71 240z, 97 e320

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I'm running a nistune ecu, no resistors needed they are a direct drop in, you have to shave the clip area on the injectors a bit and the stock RB injector clips fit. They should be good for 400whp depending on fuel pressure.

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jrd450r
Posts: 194
Joined: Tue Oct 03, 2006 10:49 am
Car: 1990 RB25DET S13

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I thought that the nistune was not available for the RB25? I looked on their web site and it says that it is in development. How are you running it?

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virus77
Posts: 1775
Joined: Thu Mar 25, 2004 9:43 am
Car: 95 S14, 71 240z, 97 e320

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I'm running a z32 300zx which i repined for use on my rb25. They share the same ecu connector but 6 or so wires need to be relocated. You lose one of the knock sensors (my knock maps are disabled anyways) but you retain VTC so I'm happy.

l0nestar
Posts: 2251
Joined: Fri Mar 10, 2006 5:24 am
Car: 1993 Nissan 250SX
2004 Toyota Altezza
1963 Chevy Impala SS
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virus77 wrote:I'm running a z32 300zx which i repined for use on my rb25. They share the same ecu connector but 6 or so wires need to be relocated. You lose one of the knock sensors (my knock maps are disabled anyways) but you retain VTC so I'm happy.
Exactly. NisTune Type 2 board. BAM!

DETurbine
Posts: 491
Joined: Mon Jun 30, 2003 12:49 pm
Car: Nissan S13 RB25
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if you get a top feed fuel rail a cheap ugrade for injectors are oem wrx injectors.....can cut the tip of and get a consistent 800cc.

Kyle Basbous
Posts: 34
Joined: Thu May 03, 2007 2:16 pm
Car: 240sx with sr20det red top car is set-up for drifting and time attack

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The rx7 GXL 1988-1991 runs 550cc injector's there plug&play you don't need resistors. They plug straight into the stock injector clips with no modification. I use a rb20 ecm with a romtune.


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