Welcome to the North American Subaru Impreza Owners Club Wednesday August 20, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Engine Management & Tuning

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 02-14-2004, 02:30 PM   #1
Twerthi
Scooby Specialist
 
Member#: 30207
Join Date: Nov 2002
Location: Olympia, WA
Vehicle:
2005 Lotus Elise
Magnetic Blue

Default Free 740cc injectors flow test report from RC Engineering

I think you'll find the report interesting

* Registered users of the site do not see these ads.

Last edited by Twerthi; 05-31-2004 at 10:56 PM.
Twerthi is offline   Reply With Quote
Old 02-14-2004, 02:40 PM   #2
jigga
Scooby Guru
 
Member#: 9960
Join Date: Sep 2001
Location: in bed...
Vehicle:
2002 Impreza WRX
WRBlue Perl

Default

So they are actually 850's and not 720's??????
jigga is offline   Reply With Quote
Old 02-14-2004, 03:02 PM   #3
Need4Boost
Scooby Specialist
 
Member#: 15194
Join Date: Feb 2002
Chapter/Region: Tri-State
Location: 1^2 Mile, NJ
Vehicle:
2004 Lightning,
2001 BMW 330ci

Default

Quote:
Originally posted by jigga
So they are actually 850's and not 720's??????
Need4Boost is offline   Reply With Quote
Old 02-14-2004, 03:45 PM   #4
eightballrj
Scooby Specialist
 
Member#: 18520
Join Date: May 2002
Chapter/Region: South East
Location: MS
Vehicle:
2005 L GT Limited
Black

Default

Ok, there is no way that everyone is having good luck with these having one set that flow around 740cc's and another that flows 850cc's. So, either someone did one of the tests wrong or these injectors are not as consistent as everyone might have thought. Whats the deal??

RJ
eightballrj is offline   Reply With Quote
Old 02-14-2004, 04:06 PM   #5
Zackbo
Scooby Specialist
 
Member#: 43151
Join Date: Sep 2003
Chapter/Region: South East
Location: Charlotte, NC
Vehicle:
04 STI
Kinda Silver-ish

Default

Awesome post, Twerthi!


From my own personal tuning efforts, I'm not surprised at the results.

Says it was performed @ 43psi test pressure.

They listed the spray pattern as excellent
Zackbo is offline   Reply With Quote
Old 02-14-2004, 04:12 PM   #6
NavyBlueSubaru
Scooby Specialist
 
Member#: 22127
Join Date: Jul 2002
Chapter/Region: South East
Location: Oviedo, FL
Vehicle:
2013 BMW 335i Sedan
Estoril Blue

Default

lets just hope that there is nobody that has 2 that flow 850cc and 2 that flow 740cc!! YIKES! that would suck, i hope mine are all even....oh well, F*** it, too late now!

Jeff
NavyBlueSubaru is offline   Reply With Quote
Old 02-14-2004, 04:18 PM   #7
Kwyjibo
Scooby Specialist
 
Member#: 17851
Join Date: Apr 2002
Vehicle:
2003 WRX
R.I.P. 7.27.2005

Default

Quote:
Originally posted by NavyBlueSubaru
lets just hope that there is nobody that has 2 that flow 850cc and 2 that flow 740cc!! YIKES! that would suck, i hope mine are all even....oh well, F*** it, too late now!

Jeff
yep...too late now, i aint reinsatlling and retuning again...
Kwyjibo is offline   Reply With Quote
Old 02-14-2004, 05:18 PM   #8
02R6
Scooby Specialist
 
Member#: 22157
Join Date: Jul 2002
Location: Westerville, OH
Vehicle:
'02 WRX '04 350Z
Cause We Are The Aquateen

Default

Wow, good to know. Thanks a lot. (I'm still going to send mine in to make sure they're flowing evenly and the pattern is good.)
02R6 is offline   Reply With Quote
Old 02-14-2004, 05:31 PM   #9
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

Perhaps you guys should start posting the numbers off of the injectors to compare with others' results. Might just be a simple design change between years that causes this difference.
8Complex is offline   Reply With Quote
Old 02-14-2004, 06:28 PM   #10
Twerthi
Scooby Specialist
 
Member#: 30207
Join Date: Nov 2002
Location: Olympia, WA
Vehicle:
2005 Lotus Elise
Magnetic Blue

Default

I was rather shocked when I looked at the report. These came from a 2002 WRX and the modifcations were performed by nhluhr (which he did an awesome freakin job, they look very very clean, almost as if there weren't any modifications done)
Twerthi is offline   Reply With Quote
Old 02-14-2004, 06:56 PM   #11
gpatmac
Scooby Guru
 
Member#: 18446
Join Date: May 2002
Chapter/Region: MAIC
Location: Alexandria, VA
Vehicle:
2002 WRX wagon
psm

Default

Hmmm, I wonder why I'm seeing between 11.1:1 to 10.6:1 at WOT but up to and over 100% IDC's. I'm going to have to take another look at what I'm doing.
gpatmac is offline   Reply With Quote
Old 02-14-2004, 07:07 PM   #12
nhluhr
John Wayne Toilet Paper
Moderator
 
Member#: 7327
Join Date: Jun 2001
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2008 Mazdaspeed3
2006 Wrangler Sport

Default

were the original ones that got flowtested the STI pinks?
nhluhr is offline   Reply With Quote
Old 02-14-2004, 07:11 PM   #13
GMTarkin
Scooby Specialist
 
Member#: 9237
Join Date: Aug 2001
Location: Youngstown, Ohio
Vehicle:
2008 Saab Turbo X
400+ lbft

Default

I doubt someone would end up with half and half, as im sure the injectors are made in batches and all come from the same bin along the assembly line
GMTarkin is offline   Reply With Quote
Old 02-14-2004, 07:28 PM   #14
Kingpin
Vendor
 
Member#: 41252
Join Date: Aug 2003
Chapter/Region: SWIC
Location: 602-795-3036
Vehicle:
Twin 2005 600WHP
FormulaD/TimeAttack Sti's

Default

Wow. Good work. Very interesting results. We have not seen a set flow test that high. Nice to see that the pattern is excellent and that they are all in the same range. Would like to see some more tested. Thanks.
Kingpin is offline   Reply With Quote
Old 02-14-2004, 10:05 PM   #15
Leonardo
Consigliere
Super Moderator
 
Member#: 185
Join Date: Aug 1999
Chapter/Region: South East
Location: Orlando, Fl
Vehicle:
2009 Civic EX
Silver

Default

Holly isht!
Leonardo is offline   Reply With Quote
Old 02-15-2004, 06:31 AM   #16
Need4Boost
Scooby Specialist
 
Member#: 15194
Join Date: Feb 2002
Chapter/Region: Tri-State
Location: 1^2 Mile, NJ
Vehicle:
2004 Lightning,
2001 BMW 330ci

Default

Did you mod the stock injectors or the pinks?

I had my stock modded by DarthChicken and his guy also flow tests them before sending them back. Ours check in at roughly 740~CC (stock blues).
Need4Boost is offline   Reply With Quote
Old 02-15-2004, 07:29 AM   #17
Zackbo
Scooby Specialist
 
Member#: 43151
Join Date: Sep 2003
Chapter/Region: South East
Location: Charlotte, NC
Vehicle:
04 STI
Kinda Silver-ish

Default

Were'nt the others flow tested at like 30psi?

That would explain the difference, down to like 10cc's.

If an injector flows 740cc's @ 30 psi, then it should flow approx. 850cc's @ 43psi.
Zackbo is offline   Reply With Quote
Old 02-15-2004, 12:25 PM   #18
DarthChicken
Scooby Specialist
 
Member#: 9073
Join Date: Aug 2001
Chapter/Region: NWIC
Location: Hillsboro, OR.
Vehicle:
2006 ariel atom
wrb/bbs gold frame

Default

Yup, gotta be different test methods. The difference between the injector flows is SO low (less than .06%) that nothing else really explains it.

gpatmac - 100% at 11:1? My god man, what turbo/engine your running? I see no more than 72% at 23psi at 8000rpm!
DarthChicken is offline   Reply With Quote
Old 02-15-2004, 01:27 PM   #19
Twerthi
Scooby Specialist
 
Member#: 30207
Join Date: Nov 2002
Location: Olympia, WA
Vehicle:
2005 Lotus Elise
Magnetic Blue

Default

The ones I had tested were stock blues, not the STi pinks.
Twerthi is offline   Reply With Quote
Old 02-16-2004, 02:09 AM   #20
gpatmac
Scooby Guru
 
Member#: 18446
Join Date: May 2002
Chapter/Region: MAIC
Location: Alexandria, VA
Vehicle:
2002 WRX wagon
psm

Default

Quote:
Originally posted by DarthChicken
gpatmac - 100% at 11:1? My god man, what turbo/engine your running? I see no more than 72% at 23psi at 8000rpm!
I apologize. I'm in the 10:1 area. I still don't think I should be seeing 90-100% IDCs, though.

2.5L block, 02 WRX heads, 740's, Green turbo, FMIC.
my log (.xls)
gpatmac is offline   Reply With Quote
Old 02-16-2004, 03:30 AM   #21
eightballrj
Scooby Specialist
 
Member#: 18520
Join Date: May 2002
Chapter/Region: South East
Location: MS
Vehicle:
2005 L GT Limited
Black

Default

no way.... thats damn near 3500cc/min of fuel total if the above report is correct.... no way you are maxing 800cc+ of injector with that setup.

Richard
eightballrj is offline   Reply With Quote
Old 02-16-2004, 03:44 AM   #22
Wzcb08
Scooby Newbie
 
Member#: 28062
Join Date: Oct 2002
Location: San Diego, CA
Vehicle:
2006 Mazda
Stage Sad =(

Default

Wzcb08 is offline   Reply With Quote
Old 02-16-2004, 04:08 AM   #23
gpatmac
Scooby Guru
 
Member#: 18446
Join Date: May 2002
Chapter/Region: MAIC
Location: Alexandria, VA
Vehicle:
2002 WRX wagon
psm

Default

I don't know what to think. I'm convinced that I'm doing something wrong or am overlooking something. Some other areas that I am or will be troubleshooting are in this thread

I need to make myself a fuel pressure checker.

While I'm updating everyone on my experiences with the 740 stockers, don't assess my experience to be universal. There's something wrong with my setup that is causing my injectors to behave funny (also note how they're behaving for me in 1st gear).
gpatmac is offline   Reply With Quote
Old 02-16-2004, 04:12 AM   #24
gpatmac
Scooby Guru
 
Member#: 18446
Join Date: May 2002
Chapter/Region: MAIC
Location: Alexandria, VA
Vehicle:
2002 WRX wagon
psm

Default

Hey eightballrj,

Your setup is similar to mine. Have you had any similar experiences to mine like what I'm posting in the other thread? Hopefully not.
gpatmac is offline   Reply With Quote
Old 02-16-2004, 10:21 AM   #25
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

AF meters get inaccurate down around the 10-10.5 AFR range and even though you're dumping fuel, they still can say 10.8:1 or so. I had this problem with a car I was tuning that was running into a fuel wall at 10.8:1... I pulled 15% of fuel out and it still read the same AFR. Took another 5-10% before the fuel wall was gone and it actually came up to about 11:1, IIRC.
8Complex is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
06 WRX injectors flow tested at RC at 560cc blinguskahn Factory 2.5L Turbo Powertrain 38 03-09-2006 07:53 PM
injectors cleaned flow tested other then rc engineering... AaronWRX Engine Management & Tuning 7 07-10-2005 11:22 AM
Another Flow Test Report from RC Engineering for The "Free Injector Mod" 02R6 Engine Management & Tuning 52 08-20-2004 09:41 PM
Free 740cc injectors flow test report from RC Engineering -- The re-test Twerthi Engine Management & Tuning 24 03-21-2004 02:27 AM
Free 740cc injector flow test report from RC Engineering Twerthi Factory 2.0L Turbo Powertrain 0 02-14-2004 02:31 PM


All times are GMT -4. The time now is 01:33 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.