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Old 06-04-2012, 02:15 AM   #101
WaniuszY
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On 07 STi, at the end of the passenger side fuel rail, there is a pressure regulator thing that ties into intake manifold. How is this supposed to work? I have a problem with my car going super rich (AFR<11.1) sometimes during idle and engine tries to die. This happens almost everytime after a fillup, so first thing was to bypass both both purge solenoids, so they are not connected to intake or intake manifold anymore and fittings capped, but this did not help.
Injectors have also just been replaced from DW1300 to ID1000 and car retuned, but the problem still exist like before. This seems like the last possible fault point. It seems that if this regulator thing would fail, it would allow fuel directly into intake manifold. Has anybody heard of this being an issue for anybody? How would I troubleshoot it, and what would be the part number for it if I just want to replace it to eliminate this as a possible problem. Any tips greatly appreciated.
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Old 06-04-2012, 10:34 AM   #102
vanousad
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There are a lot of post on here and I dont have time to read through them all so I will just ask. I am looking at buying a Fuel Pump, Fuel Injectors, Top feed Fuel Rail, and some new Fuel lines. My question is, is there ANYTHING else I need to buy to go along with these items such as TGV deletes? I am getting ready to buy a new turbo and full exhaust set up, thats why I am buying the fuel setup firts fyi.
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Old 06-04-2012, 10:56 AM   #103
cosseywrx
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Tgvs would be good cuz ur already in there and the intake mani is off. Ur car will also idle funny at the end of cold starts.
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Old 09-17-2012, 05:46 PM   #104
rob1n1
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Quote:
Originally Posted by SlackerNJ View Post
Great info. You should add the new DW65c fuel pump for 08+ STis. It is a drop in replacement, flows 265 lph, and has great reviews.
Bump for this.
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Old 09-24-2012, 07:40 PM   #105
theSlothy1
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I recently bought a set of used id1000's and they didnt come with the lower cushions where the injector sits in the TGV. From what I have read, the oem cushions are not the correct size to fit them. Would someone know what size I will need to find/ what they come on, I am trying to find someone in Canada that supplies them. Thank you.
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Old 10-13-2012, 02:30 PM   #106
Fierysun
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I'm getting ready to run e85 and want to know which is the ideal fuel pump for my setup , if i don't want to run any higher than stock fuel pressure, or have the pump hard-wired (to reduce current drop) to the battery.

Which in tank fuel pump would still provide the required amount of fuel at 100% IDC for either 1,000cc or 1,100cc injectors and survive e85 for the long term?

As for Unabomber closing my original post. Neither your post or this thread answers my question.
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Old 10-13-2012, 02:56 PM   #107
CobbsSTI
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Quote:
Originally Posted by Fierysun
I'm getting ready to run e85 and want to know which is the ideal fuel pump for my setup , if i don't want to run any higher than stock fuel pressure, or have the pump hard-wired (to reduce current drop) to the battery.

Which in tank fuel pump would still provide the required amount of fuel at 100% IDC for either 1,000cc or 1,100cc injectors and survive e85 for the long term?

As for Unabomber closing my original post. Neither your post or this thread answers my question.
I've been running the Deatchwerks 320lph pump with much success, I'm also running ID 1000cc on E85 and having no problems with this pump. I think you would like it. Your stock FPR should take care of your pressure, if not you can get an aftermarket fpr for rather cheap and adjust it to your desired fuel pressure with ease.
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Old 10-13-2012, 04:01 PM   #108
the suicidal eggroll
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Quote:
Originally Posted by Fierysun View Post
I'm getting ready to run e85 and want to know which is the ideal fuel pump for my setup , if i don't want to run any higher than stock fuel pressure, or have the pump hard-wired (to reduce current drop) to the battery.

Which in tank fuel pump would still provide the required amount of fuel at 100% IDC for either 1,000cc or 1,100cc injectors and survive e85 for the long term?

As for Unabomber closing my original post. Neither your post or this thread answers my question.
The DW300 should be able to handle that flow.

It's pretty simple to calculate yourself. Take your injector flow in cc/min, multiply by 4. That's your total fuel requirement in cc/min. Multiply this by 0.06 to convert your total fuel requirement from cc/min to L/hr.

Then take your WOT boost level, add 43.5, and make sure your pump can flow at least that much fuel at that pressure.

1000cc injectors will require 1000*4*.06 = 240 L/hr of fuel.
If you're running 22 psi boost, then you need a pump that can do 240 L/hr at 65.5 psi.

Since you don't want to rewire the pump, use the 12v spec if it exists. The DW300 can flow approx 260 L/hr at 13.5v, so on the stock wiring it should be pretty close to your 240.
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Old 10-13-2012, 05:22 PM   #109
Fierysun
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Thanks for your response CobbsSTI and the suicidal eggroll!

If i was running 1,100cc injectors and a non-hardwired pump. Wouldn't the DW300 drop off at the top of the current draw to below the required amount of fuel flow?
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Old 10-13-2012, 05:51 PM   #110
the suicidal eggroll
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Depends on your boost level at max fuel flow and the extent of the voltage drop in the stock wiring, but yes, chances are you would hit the pump's limits before the injectors'.
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Old 10-13-2012, 05:54 PM   #111
Fierysun
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Quote:
Originally Posted by the suicidal eggroll View Post
Depends on your boost level.
I'm at 20.5 psi on 91 pump, so i would assume 25+psi on e85 with the exact same setup.
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Old 10-13-2012, 05:58 PM   #112
the suicidal eggroll
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Quote:
Originally Posted by Fierysun View Post
I'm at 20.5 psi on 91 pump, so i would assume 25+psi on e85 with the exact same setup.
The boost level at peak flow (near redline) is what matters, not the peak boost. However, if it's that close you might want to look at a larger pump, such as the E85-safe Walbro 400 (or 450, whatever it is).
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Old 10-15-2012, 04:08 PM   #113
Fuel Injector Clinic
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Hey Unabomber, thanks for compiling this information to help educate everyone about fuel systems. There can be a lot involved in choosing the best components for your setup so we're always trying to educate as much as possible.

I also wanted to see if we might be able to be added to the list in the first page as an injector manufacturer? Our website is www.fuelinjectorclinic.com

Subaru Injectors We Offer
We offer high and low impedance injectors from 440cc up to 2150cc for all WRX, STi, Legacy GT, BRZ, and more.
Our most common injectors for the Subaru market are the following high impedance injectors:
650cc
775cc
900cc
1100cc
2150cc

Top Feed Conversion Fuel Rail and Injector Setup
We also have a top feed conversion fuel rail and injector setup for the 04-06 STi (available in red, blue, black, and silver) that you can see here: http://fuelinjectorclinic.com/index....roduct_id=1158

We just released a brand new website which has some cool new injector calculators to help you determine the best injector set for you. Check out the links below:

Flow Calculator
http://fuelinjectorclinic.com/flow-calculator

HP Calculator
http://fuelinjectorclinic.com/hp-calculator

You can view more details about our Subaru lineup here, just click the tabs at the top for the different Subaru fitments we offer: http://fuelinjectorclinic.com/subaru/wrx-stilate

If we can help answer any other questions please let us know and I'll be happy to contribute here!
-Bryan

Last edited by Fuel Injector Clinic; 03-25-2013 at 10:52 AM.
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Old 03-24-2013, 02:20 PM   #114
ANR62NV
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I'm a little torn between two fuel pumps that I wanna purchase for my fuel system upgrade ....

The pump I'm really leaning towards is the DW65C cause it's plug and play, straight drop in pump with no modification/fab required ..
But I noticed CNT released there 265 fuel pump that looks like a direct replica of the DW65C pump and is $50 less ....

Any good feedback on the CNT fuel pump?

Anything to help make my decision easier would be helpful , thank you
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Old 06-09-2013, 11:17 AM   #115
Amaan_ej20
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I am running the sard 800cc injectors on my my03 jdm wrx sti, i am unable to obtain the correct latencies.
Does anybody have the latencies for these injectors?
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Old 07-09-2013, 10:12 PM   #116
Joshrs
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Thanks for the write ups! Just finished reading them!
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Old 07-20-2013, 04:15 PM   #117
alexs001
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The Mike Egan and Jorge fuel rail install links are dead.
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Old 07-28-2013, 10:10 PM   #118
sleeperlodo
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dump question: just want to upgrade turbo from TD04 to VF46+E-map tune. with same stock injectors, fuel pump and tmic is it possible???

2010 FXT Cobb State 2 + CNT Catted DP with 91gas

Last edited by sleeperlodo; 07-28-2013 at 11:59 PM.
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Old 07-28-2013, 10:56 PM   #119
gaby
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Not on e85. You Need at least 750cc injectors.
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Old 08-18-2013, 02:42 PM   #120
kaj
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Quote:
Originally Posted by ANR62NV View Post
I'm a little torn between two fuel pumps that I wanna purchase for my fuel system upgrade ....

The pump I'm really leaning towards is the DW65C cause it's plug and play, straight drop in pump with no modification/fab required ..
But I noticed CNT released there 265 fuel pump that looks like a direct replica of the DW65C pump and is $50 less ....

Any good feedback on the CNT fuel pump?

Anything to help make my decision easier would be helpful , thank you
i wouldn't quibble over $50 on something as important as a fuel pump.
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Old 08-23-2013, 01:22 PM   #121
Patrick Olsen
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Somewhat random question about fuel pump flow ratings...

Looking at the '97 Legacy/Outback FSM, it says the following:
Quote:
Originally Posted by FSM
Discharge pressure: 250.1 kPa (2.55 kg/cm2, 36.3 psi)
Discharge flow: AWD: More than 80 l (21.1 US gal, 17.6 Imp gal)/h [12 V at 300 kPa (3.06 kg/cm2, 43.5 psi)]
Is that just a misprint in the FSM, or how can they rate the discharge flow at a pressure 7# higher than the discharge pressure of the pump?
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Old 12-16-2013, 10:02 AM   #122
STIinthefe
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Need advice.
I recently talked to my tuner about running e85 with the stock turbo and down the road upgrading to a larger turbo. He told me 850cc for e85 and stock turbo but I should get 1000cc if I plan on going bigger turbo.

So my question is should I go 1000cc? I will have the e85 tune with stock turbo for about 6 months until I can go bigger turbo. Are the 1000cc too big for 6 months or if I like the gains I might not want to go bigger turbo. Would the 1000cc injectors be too big to run permanently with the stock turbo and e85?
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Old 12-16-2013, 10:10 AM   #123
cosseywrx
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E85 dumps alot of fuel! Injector dynamic injectors can flow as low as 200cc i beleive. You should be way good.
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Old 12-16-2013, 10:11 AM   #124
the suicidal eggroll
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1000cc is fine on the stock turbo. The question you should be asking yourself is if 1000cc is going to be big enough for an aftermarket turbo on e85. 1000cc won't be able to get you very far, so unless you're planning on a 20g sized setup you may need to go even bigger.
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Old 12-16-2013, 10:12 AM   #125
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If you plan on needing 1000cc injectors in 6 months, then get them now. Nothing wrong per se with using too large of an injector as any tuner familiar with that brand can "tune them down" to work on smaller turbos. One can use "too big" injectors when:

1. They know they are upgrading "soon" to require their use.
2. They stumble on a super deal....lets say you need 650cc injectors for XXX turbo, but your buddy will give you his 1000cc injectors for $50.
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