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infuriated · August 4th, 2009, 07:50 AM

Here is a list of similar style injectors that I could find that in theory should be Plug'n'Play.. However, I can not confirm whether or not they will be Plug'n'Play as they haven't all been tested.
Also it is strongly recommended to retune your car using a Air/Fuel Ratio Wideband 02 Sensor and an AEM FIC + BrianJ Harness or a Hackish reflash. (Special Note for Ralliart people, there is no BrianJ Harness out for the AEM FIC, but the reflash from Hackish is available)

Complete Theoretic Fit list:
Year Make/Model Engine Size/Color Part #

400cc +
02-05 Subaru WRX 440cc (425cc) - Lt. Blue Body (2004 was greenish) #3920 (Often referred to as OEM USDM WRX 440cc Injectors or Light Blues)
2001+ JDM Subaru STI, STI-RA, S202 Impreza 565cc (540cc) - Thin Pink Body #3910 (Often referred to as JDM STI Pinks)
06-09 Subaru WRX 560cc top feed injectors
89-92 Mazda RX-7 NA 440cc - Blue Top #195500-5740
89-92 Mazda RX-7 NA 460cc - Red Top #195500-2010
89-92 Mazda RX-7 TURBO 550cc - Purple Top #195500-2020
04-08 Mazda RX8 425cc - Yellow Body #195500-4450
89-92 Toyota Supra 7MGE TURBO 430cc – Black Top

400cc -
89-92 Toyota Supra 7MGE NA 305cc (312cc) – Light Green Top #23250-70080
93-95 Toyota Supra 3.0L 312cc - Maroon Top #23250-46030
Toyota 3SGE 315cc – Pink Top
89-91 B2600 Truck 326cc - Gray Top #195500-2150
Mazda 323 GTX TURBO 360cc - Black Top #195500-2130
Celica/MR2 3SGE NA 370cc (372cc) - Green Top #23250-74160

The numbers in brackets are the actual flow tested numbers according to: http://www.injectorrx.com/densotf.html

Fully Confirmed List:
The 02-05 USDM OEM Subaru WRX 440cc Injectors
The JDM Subaru STI Pink 565cc Injectors

Confirmed but not 100% Plug'n'Play:
89-92 RX-7 Injectors

WRX Injectors Buyers Guide:

Step One: Figure out your goals.

Are you going to run 5-9psi boost on stock internals? Then get the 02-05 USDM OEM Subaru WRX 440cc Injectors as they can withhold up to around 12psi

Are you going to upgrade internals and go high boost? Then get the JDM Subaru STI Pink 565cc Injectors as they can withhold up to around 350hp

Plan on going above 350hp? Then get some modified WRX Injectors. But make sure that they have been flow tested!

Still unsure? Then go to http://www.injectorrx.com/sizing.html and fill out your hp goals, number of injectors (4), B.S.F.C. (.49ish?), duty cycle (80%) etc. and it will calculate the right injector size for your specific turbo application.

Step Two: Once you know your goals, make sure you are getting the correct ones

As a rule of thumb, they have to be top feed high impedance injectors.

The OEM WRX Injectors from North American Models (USDM) are top feed and therefore work.

The OEM WRX STI Injectors from North American Models (USDM) are side feed and therefore do not work.

The OEM WRX STI Injectors from Japanese Models (JDM) are top feed and therefore work. The way to tell whether they are Japanese is they should be listed as JDM (Japanese Domestic Market)... and in the WRX STI's case they will be pink color and slim body..

Also be careful when buying WRX Injectors as many have been modified from a moderate cc amount to a very large cc amount, so look for words such as stock or oem. Also make sure that they mention the cc amount!

Step Three: Look at the correct places

The best place and first place you should look is:
NASIOC

They would usually be listed under The Private 'For Sale' Classifieds>Engine/Power/Exhaust

If that does not work.. then try ebay.

EVO Injectors Buyers Guide:

In terms of going the Evo route you have two possibilities.

The first one would be to get the full AMS evo8/evo9 fuel rail, but in this case you will need to replace the stock fuel pump to add return lines. Note: EVO Injectors are not High Impedance so they will require resistors.

The second one would be to use EVO 8/9 injectors with our rail, but in this case you have to change the plug connectors out and add resistors.

The EVO route is doable, but by no means a plug'n'play solution, so therefore I recommend going with the WRX route which is full P'n'P. Also if you want to upgrade your fuel rail RPW makes a 4g69 fuel rail which can be found here: http://www.rpw.com.au/shop/index.php...mart&Itemid=31

Hope this thread can help you guys, and if you know of any injectors that are plug'n'play which haven't been mentioned here, please let me know.

August 4th, 2009, 07:50 AM	#1 (permalink)
infuriated Senior Member Join Date: Sep 2008 Location: Canada Vehicle: '07 M175U815H1 3CL1P53 GS Posts: 206 Rep Power: 2	Injectors that should fit the GS Here is a list of similar style injectors that I could find that in theory should be Plug'n'Play.. However, I can not confirm whether or not they will be Plug'n'Play as they haven't all been tested. Also it is strongly recommended to retune your car using a Air/Fuel Ratio Wideband 02 Sensor and an AEM FIC + BrianJ Harness or a Hackish reflash. (Special Note for Ralliart people, there is no BrianJ Harness out for the AEM FIC, but the reflash from Hackish is available) Complete Theoretic Fit list: Year Make/Model Engine Size/Color Part # 400cc + 02-05 Subaru WRX 440cc (425cc) - Lt. Blue Body (2004 was greenish) #3920 (Often referred to as OEM USDM WRX 440cc Injectors or Light Blues) 2001+ JDM Subaru STI, STI-RA, S202 Impreza 565cc (540cc) - Thin Pink Body #3910 (Often referred to as JDM STI Pinks) 06-09 Subaru WRX 560cc top feed injectors 89-92 Mazda RX-7 NA 440cc - Blue Top #195500-5740 89-92 Mazda RX-7 NA 460cc - Red Top #195500-2010 89-92 Mazda RX-7 TURBO 550cc - Purple Top #195500-2020 04-08 Mazda RX8 425cc - Yellow Body #195500-4450 89-92 Toyota Supra 7MGE TURBO 430cc – Black Top 400cc - 89-92 Toyota Supra 7MGE NA 305cc (312cc) – Light Green Top #23250-70080 93-95 Toyota Supra 3.0L 312cc - Maroon Top #23250-46030 Toyota 3SGE 315cc – Pink Top 89-91 B2600 Truck 326cc - Gray Top #195500-2150 Mazda 323 GTX TURBO 360cc - Black Top #195500-2130 Celica/MR2 3SGE NA 370cc (372cc) - Green Top #23250-74160 The numbers in brackets are the actual flow tested numbers according to: http://www.injectorrx.com/densotf.html Fully Confirmed List: The 02-05 USDM OEM Subaru WRX 440cc Injectors The JDM Subaru STI Pink 565cc Injectors Confirmed but not 100% Plug'n'Play: 89-92 RX-7 Injectors WRX Injectors Buyers Guide: Step One: Figure out your goals. Are you going to run 5-9psi boost on stock internals? Then get the 02-05 USDM OEM Subaru WRX 440cc Injectors as they can withhold up to around 12psi Are you going to upgrade internals and go high boost? Then get the JDM Subaru STI Pink 565cc Injectors as they can withhold up to around 350hp Plan on going above 350hp? Then get some modified WRX Injectors. But make sure that they have been flow tested! Still unsure? Then go to http://www.injectorrx.com/sizing.html and fill out your hp goals, number of injectors (4), B.S.F.C. (.49ish?), duty cycle (80%) etc. and it will calculate the right injector size for your specific turbo application. Step Two: Once you know your goals, make sure you are getting the correct ones As a rule of thumb, they have to be top feed high impedance injectors. The OEM WRX Injectors from North American Models (USDM) are top feed and therefore work. The OEM WRX STI Injectors from North American Models (USDM) are side feed and therefore do not work. The OEM WRX STI Injectors from Japanese Models (JDM) are top feed and therefore work. The way to tell whether they are Japanese is they should be listed as JDM (Japanese Domestic Market)... and in the WRX STI's case they will be pink color and slim body.. Also be careful when buying WRX Injectors as many have been modified from a moderate cc amount to a very large cc amount, so look for words such as stock or oem. Also make sure that they mention the cc amount! Step Three: Look at the correct places The best place and first place you should look is: NASIOC They would usually be listed under The Private 'For Sale' Classifieds>Engine/Power/Exhaust If that does not work.. then try ebay. EVO Injectors Buyers Guide: In terms of going the Evo route you have two possibilities. The first one would be to get the full AMS evo8/evo9 fuel rail, but in this case you will need to replace the stock fuel pump to add return lines. Note: EVO Injectors are not High Impedance so they will require resistors. The second one would be to use EVO 8/9 injectors with our rail, but in this case you have to change the plug connectors out and add resistors. The EVO route is doable, but by no means a plug'n'play solution, so therefore I recommend going with the WRX route which is full P'n'P. Also if you want to upgrade your fuel rail RPW makes a 4g69 fuel rail which can be found here: http://www.rpw.com.au/shop/index.php...mart&Itemid=31 Hope this thread can help you guys, and if you know of any injectors that are plug'n'play which haven't been mentioned here, please let me know. __________________ Soon to be installed: T3/T4 50 Trim Hybrid Turbo, Full Tubular Manifold, Forge Blow-Off Valve, 38mm Tial Wastegate with 10psi spring, 1,100 cfm Intercooler, 440cc Subaru WRX Injectors, Greddy Profec B II Boost Controller, Intake/Intercooler/Exhaust Piping, AEM FIC, GT Throttle Body, Outlaw Engineering Throttle Body Spacer, Oil Catch Can, PLX M-300 Tuner Edition Wideband, RRE Underdrive Pulley, RRE Magnaflow Exhaust. Last edited by infuriated; August 26th, 2009 at 02:26 PM.