Modified stock RS injectors

Odyknuck · 12-23-2008, 04:27 PM

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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bubba2533 · 12-23-2008, 06:56 PM

I thought that WRX or STI injectors were the ones that you could modify.

ballitch · 12-24-2008, 12:18 AM

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~

Wedge · 12-25-2008, 09:15 PM

Quote:

Originally Posted by bubba2533

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

Odyknuck · 12-26-2008, 09:23 AM

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?

Wedge · 12-26-2008, 10:53 AM

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.

johnny p · 12-26-2008, 08:14 PM

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.

Odyknuck · 12-26-2008, 10:18 PM

Quote:

Originally Posted by johnny p

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?

Mycues1982 · 12-27-2008, 10:53 AM

Yea please share, I have 2 sets of these sitting in a bag.

turboed22 · 12-27-2008, 05:52 PM

Quote:

Originally Posted by johnny p

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?

White 2.5rs · 01-04-2009, 02:50 PM

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

IllNastyImpreza · 01-04-2009, 11:17 PM

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.

12-23-2008, 04:27 PM	#1
Odyknuck Scooby Newbie Member#: 192866 Join Date: Oct 2008 Location: Rome, Ohio Vehicle: 2006 Impreza Blue	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 * Registered users of the site do not see these ads.

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12-23-2008, 06:56 PM	#2
bubba2533 Scooby Newbie Member#: 175483 Join Date: Mar 2008 Chapter/Region: MAIC Location: Pittsburgh PA Vehicle: 97 N/A w/ MS3 Aegean Blue	I thought that WRX or STI injectors were the ones that you could modify.

12-24-2008, 12:18 AM	#3
ballitch Scooby Specialist Member#: 74907 Join Date: Nov 2004 Chapter/Region: NWIC Location: salem, OR Vehicle: 98 cam'd EJ251 Wrx Tranny,slowr than ish	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~

12-26-2008, 09:23 AM	#5
Odyknuck Scooby Newbie Member#: 192866 Join Date: Oct 2008 Location: Rome, Ohio Vehicle: 2006 Impreza Blue	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?

12-26-2008, 10:53 AM	#6
Wedge Scooby Specialist Member#: 2279 Join Date: Sep 2000 Chapter/Region: South East Location: The MIA Vehicle: 2000 Slingshot/99RS Pastelito Racing / SFSOC	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.

12-26-2008, 08:14 PM	#7
johnny p Scooby Newbie Member#: 141232 Join Date: Feb 2007 Chapter/Region: NESIC Location: wakefield,ma. Vehicle: 95 wrx kinda blue	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.

12-27-2008, 10:53 AM	#9
Mycues1982 Scooby Specialist Member#: 86995 Join Date: May 2005 Location: Pittsburgh, PA Vehicle: 2005 Tacoma	Yea please share, I have 2 sets of these sitting in a bag.

01-04-2009, 02:50 PM	#11
White 2.5rs Scooby Guru Member#: 39936 Join Date: Jul 2003 Vehicle: 99RS TWE&SCAT EJ257 Hydra+HMist+PPG+35R=DEATH	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

01-04-2009, 11:17 PM	#12
IllNastyImpreza Scooby Guru Member#: 36333 Join Date: May 2003 Chapter/Region: NESIC Location: East Kingston NH Vehicle: DIY project: life I need more TIME!	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.