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Old 09-28-2010, 12:37 PM   #51
Odyknuck
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So what areas did you tune to get rid of the Backfire. Also did you need to go rich or lean.
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Old 09-28-2010, 03:03 PM   #52
thumpetto007
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So I read through this thread, and still haven't answered the question I have.

I have a 2001 2.5rs and am doing a turbo build. I need 1200cc injectors, and am still researching what I need.

I will be using the 2001 intake manifold. Aren't there high flowing injectors that fit and work perfectly without modification?

Thanks.
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Old 09-28-2010, 03:22 PM   #53
Skidd
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Quote:
Originally Posted by Skidd View Post
The problem isn't the flow rate or availability of options.
It's the dang intake manifold design of the 00-01 EJ251 and the damn AirAssist ports!
Nobody, I repeat Nobody makes a high-flow replacement designed for that Manifold.
Perhaps this post didn't answer your question? Or you missed it.
But, no. Nobody makes a direct replacement.
WRX injectors can be made to work, but very minor modifications (O-Rings and AirAssist plugging). You don't "need" to hog out the ports like on the previous posts. It's just helpfull.
So, go find some 1200cc injectors designed to fit the top feed WRX, and grab a bag of Injector ORings.
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Old 01-04-2013, 03:12 AM   #54
Zefy
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Location: Coquitlam, BC, Canada
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1979 BRAT / 01 RSTI
99 2.5TS (DEAD) / 87 GL

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sorry to bump up this old thread but I'm currently installing some wrx 440's into my RS manifold. Just wanted to confirm what I'm doing is reasonable and also get some pictures out there that are a little more specific.

so just for reference, stock RS injector



Here is a picture of my stock wrx injector with the 'proper' o-rings setup I have chosen from my selection of o-rings. The top two are from the stock RS injector. The little one in the middle isn't really needed but i thought it might keep debris and stuff from getting inside the fuel rail. The bottom o-ring is the stock wrx one.



This o-ring seems to cover the air assist port fully.

Here it is installed in the stock RS rail. Also installed is a stock RS injector just for reference.



And here it is installed in the manifold. Note I can't use the injector clip as the wrx one is different.



Also from underneath...





Is this right?

Last edited by Zefy; 01-05-2013 at 04:45 AM.
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Old 01-04-2013, 02:42 PM   #55
akfmx
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Based on my own research, I don't think you will be able to use the bottom wrx o-ring like that. I have never heard of anyone doing that. I hope someone else chimes in because I too am trying to find the right o-ring setup for wrx blues in a MY 2000 air assist manifold.

I guess if nothing else you could try it out and see if that wrx o-ring seals the injector to the manifold with no leaks.
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Old 01-04-2013, 10:26 PM   #56
retrac
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I used wrx o-rings. The air assist stuff was removed and filled/plugged from the outside with Right Stuff RTV.
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Old 01-05-2013, 04:44 AM   #57
Zefy
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what did you use for the top? Stock RS ones?

I was looking around and there was a few posts about a rallitek o-ring kit for doing this swap. I phoned them today and they still carry them. Just curious if it's really necessary. Probably a good idea to replace anyway (mine are used) but its just a pain getting them.
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Old 02-17-2013, 09:07 PM   #58
rs_sedan
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Quote:
Originally Posted by Zefy View Post
what did you use for the top? Stock RS ones?

I was looking around and there was a few posts about a rallitek o-ring kit for doing this swap. I phoned them today and they still carry them. Just curious if it's really necessary. Probably a good idea to replace anyway (mine are used) but its just a pain getting them.
I believe some users over on rs25 were having issues withe the rallitek kit
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Old 02-17-2013, 11:25 PM   #59
Zefy
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Quote:
Originally Posted by rs_sedan View Post
I believe some users over on rs25 were having issues withe the rallitek kit
ya... i am...
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