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Old 12-23-2008, 04:27 PM   #1
Odyknuck
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Default Modified stock RS injectors

Read that the ends could be cut off of the stock injectors to yield aprox. 750 CC. Using a T3 60 trim Turbo my questions are:

1) How does removing the end effect the spray pattern
2) Can they be tuned easyly using the Greddy Ultimate
3) Will they run to rich at Idel and lower RPMs
4) Are they worth doing or just get a set of WRX top feed injectors
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Old 12-23-2008, 06:56 PM   #2
bubba2533
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I thought that WRX or STI injectors were the ones that you could modify.
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Old 12-24-2008, 12:18 AM   #3
ballitch
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You can mod any injector I would imagine. IIRC, the stock RS injector is 270cc/min. Yes it effects the spray pattern. The Emanage should allow you to pull fuel at idle to run normally. I would look into sending your injectors (or buy a second set) to Deaschwerks (sp?) to be modified. Then weight that cost vs. buying a set of used wrx 440's.


~Josh~
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Old 12-25-2008, 09:15 PM   #4
Wedge
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Quote:
Originally Posted by bubba2533 View Post
I thought that WRX or STI injectors were the ones that you could modify.
You thought right.

http://forums.nasioc.com/forums/showthread.php?t=478921
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Old 12-26-2008, 09:23 AM   #5
Odyknuck
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Are you saying the stock top feed RS 2.5 injector can not be modified? If you can modify them what would the CCs be and would it be the same procedure?
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Old 12-26-2008, 10:53 AM   #6
Wedge
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I've never heard of anyone modifying the stock RS injectors. I modded and am running the WRX ones, and came back from RC Engineering flowing at ~830cc. Some have gotten ~870cc out of them.
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Old 12-26-2008, 08:14 PM   #7
johnny p
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I have modded 2 sets, they are just under 550cc's.
I sent them to be flow tested ,and came up with 1 matched set.
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Old 12-26-2008, 10:18 PM   #8
Odyknuck
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Quote:
Originally Posted by johnny p View Post
I have modded 2 sets, they are just under 550cc's.
I sent them to be flow tested ,and came up with 1 matched set.
550 CCs out of a stock set. 550cc's is just about were I want to be. I will be running 8# max boost. Did you just grind the end off? You stated it took you 2 sets to get one good set? How far were they off?
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Old 12-27-2008, 10:53 AM   #9
Mycues1982
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Yea please share, I have 2 sets of these sitting in a bag.
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Old 12-27-2008, 05:52 PM   #10
turboed22
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Quote:
Originally Posted by johnny p View Post
I have modded 2 sets, they are just under 550cc's.
I sent them to be flow tested ,and came up with 1 matched set.
Were these top-feeds?
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Old 01-04-2009, 02:50 PM   #11
White 2.5rs
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my friend and i tried drilling them with a jewelers drill and a jeweler who was really good.... we got no where lots of leaks etc

just do the wrx mod
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Old 01-04-2009, 11:17 PM   #12
IllNastyImpreza
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IIRC the only "easy" way to mod the injectors is to use wrx top feeds. The yellowtop sti injectors are doable...but harder. I plan to send mine off to PE to mod , its pretty cheap too.
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