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Old 05-23-2014, 05:34 AM   #2801
SueBaroo
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I jus read the entirety of the first page and just wanted to be sure that it is safe to run 30% e85 with everything stock.

Plan is to octane boost to 91 using 70% 87 and 30% e85.
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Old 07-24-2014, 01:11 PM   #2802
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I would octane boost the 91 to 94 with 30% E85. You don't want to risk it being 90 octane and actually be more prone to knock.

I used to run E30 all the time on stock Subarus.
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Old 08-20-2014, 10:27 PM   #2803
methaddict
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Has anyone here run AEM Series 2 with the patch that supports a flex fuel sensor? From what I gather you have to do an E85 tune and gas pump tune. With the AEM S2 getting a reading from the FFS will adjust the A/F ratio of the percentage of Ethanol in the tank via autotune feature. I ordered a GM/Continental 13577394 flex fuel sensor, the wire harness GM part# 13352241, and two Russell 644003 push on EFI -8an to 3/8 hard line fuel fittings.

I'll be running dual Walbro 90000267's 450LPH in tank on a Fullblown hanger, -8an ptfe feed lines and fittings, -6an return, Aeromotive FPR, Aeromotive fuel filter with shut off valve. I have older FIC Bluemax 1350cc low impedence injectors I planned to use but will max out to fast so I plan to get FIC 2150cc high impedance or FID 2000cc high impedance injectors.

Build: 04 STI, new case halves, 99.5mm JE coated pistons, heavy duty wrist pins, Manley TT rods, stock size ARP head studs, BC 272 AVCS cams, mildly ported, 5 angle valve job, stock size Supertech intake and exhaust valves, upgraded springs. Borg Warner 8374 EFR, dual external Tial MV-S 38mm wastegates with Full race TS headers/up pipe. NA long runner, large plenum intake manifold. Large AMR 5" thick core fmic.

My limiting factor would probably be the stock size ARP head studs so what would be the psi limit? Also that it's not a sleeved block but at least with new case halves at 99.5mm pistons. 550 to 600 awhp sound reasonable?

Last edited by methaddict; 08-20-2014 at 10:42 PM.
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Old 09-18-2014, 02:14 PM   #2804
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So quick question for the experts, i currently have a pretty much stock 02 wrx wagon. It has walbro 255 fuel pump, different fuel filter, turbo xs fuel rails, 750cc injectors, short ram intake, ported turbo, new spark plugs, and i think that's pretty much it. But the car really needs tuned and before i get it tuned i would like to do all the upgrades necessary to run e85 and I'm wondering if you guys could tell me if what i have is sufficient enough or if i need more

Thanks in advance!
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Old 09-18-2014, 05:46 PM   #2805
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Maybe clutch depending on how much torque you're expecting to make.
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Old 09-18-2014, 05:56 PM   #2806
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I'm really not going for super high dyno numbers, but i do plan on replacing it sometime soon. But I'm just wondering if the injectors and fuel pump and other fuel related things would hold up with no problems.
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Old 09-18-2014, 06:02 PM   #2807
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Quote:
Originally Posted by SH4GG1NWAG0N View Post
So quick question for the experts, i currently have a pretty much stock 02 wrx wagon. It has walbro 255 fuel pump, different fuel filter, turbo xs fuel rails, 750cc injectors, short ram intake, ported turbo, new spark plugs, and i think that's pretty much it. But the car really needs tuned and before i get it tuned i would like to do all the upgrades necessary to run e85 and I'm wondering if you guys could tell me if what i have is sufficient enough or if i need more

Thanks in advance!
It would be alright as it is. Two things that might help:

3 port boost controller - can help hit higher peak boost.

Upgraded bypass valve - the stock one tends to push open near 20 psi so if you want to peak the boost a bit higher you need a valve that stays closed. There is the "crush mod" if you are on a budget.

If you can source them, an STi VF turbo and STi intercooler will REALLY compliment this setup in my opinion. The TD04 is just too small for any top end power.
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Old 09-18-2014, 06:05 PM   #2808
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I have a 2 port boost controller if that makes a difference? And i do also have the sti intercooler. What is the "crush mod"?
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Old 09-18-2014, 08:02 PM   #2809
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Quote:
Originally Posted by SH4GG1NWAG0N View Post
I'm really not going for super high dyno numbers, but i do plan on replacing it sometime soon. But I'm just wondering if the injectors and fuel pump and other fuel related things would hold up with no problems.
It's not so much the dyno numbers, but the peak torque you'll be making on E85 (which is going to be a lot) that matters. I have a pretty vanilla E85 tune, but even then the stock clutch was slipping like a mofo.

It'd probably be a good thing to check with other folks to see how much torque their stock GD WRX clutch was able to hold. FWIW the Exedy Stage 1 clutch is rated at 278 ft/lb of torque at the wheels; I imagine the stocker (which I believe is also made by Exedy) would be even lower, so if you'll be making more torque than that you probably will need to budget for an upgraded clutch too.
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Old 09-18-2014, 08:06 PM   #2810
WRXt4cy
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Quote:
Originally Posted by SH4GG1NWAG0N View Post
I have a 2 port boost controller if that makes a difference? And i do also have the sti intercooler. What is the "crush mod"?
A stock 2-port bleed style? A 3 port interrupt style will work better.

You can search the crush mod. You are essentially denting the top of the BOV to push on the spring in there and add more tension to keep it closed at higher boost.
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Old 09-18-2014, 09:11 PM   #2811
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Its not stock, its a grimmspeed manual controller with only 2 ports. but i'll check around with some people on that clutch deal.
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Old 09-18-2014, 09:32 PM   #2812
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Yeah... That's just called a manual boost controller. Ball and spring type to be specific.
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Old 09-27-2014, 11:14 PM   #2813
chris5th
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......
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Old 10-02-2014, 02:44 PM   #2814
dargorbr
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which fuel pump should I use for E100?

Last edited by dargorbr; 10-02-2014 at 03:36 PM.
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Old 10-21-2014, 10:00 AM   #2815
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dw 301 is what I'm running

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Old 11-07-2014, 07:09 AM   #2816
stealth_ninja
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So I read through the first two pages, I have a bone stock 2013 and am interested in doing this. All I need to do is get bigger injectors, better boost control module, and better TMIC? My end goal is to achieve 100% E85 btw.

Last edited by stealth_ninja; 11-07-2014 at 07:10 AM. Reason: forgot to put goal
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Old 11-07-2014, 04:25 PM   #2817
gaby
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Ecu tune, too.

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Old 11-07-2014, 06:05 PM   #2818
yamahaSHO
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Looks like my local station is in their winter blend. Filled up the car last night and my WOT pulls shot down to 11:1 flat. Almost time to top it off and put it under a cover for winter.
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Old 11-07-2014, 06:12 PM   #2819
gaby
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Not in Tucson. Is 80 degrees today.

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Old 11-07-2014, 06:48 PM   #2820
yamahaSHO
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Well... It's Tucson. No surprise. I am a Phoenix native.
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Old 11-29-2014, 05:01 AM   #2821
StiLimited
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Default e85 and long term storage

Hello All,

Just giving you a long term update to e85.

In 2009 I converted my STI over to 100% e85 and ran it for several months. Then I parked it and put it away for long term storage. This month I pulled it out and it started right up. (Was on a Battery Tender all during that time and did replace the battery about 3 years ago.)

I did treat and retreat the fuel with Stabil Alcohol version over the years and I went from full to 1/2 and then retopped off the tank and then got back to about 1/2 again over the 5 years period. I ran out the old fuel just fine no problems, but I did not stress the engine much while I did. I refilled with all new e85 and made a few hard blasts and it runs great.

I have a Walbro fuel pump and replaced the injectors when I converted over to full e85. But other than that it's 100% stock fuel system.

I've only been driving a few weeks, but it runs just like I did when I parked it.

Just thought I'd let you all know about my long term storage and e85 experience.

The Ru is a 2007 STI Ltd.
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Old 11-29-2014, 01:02 PM   #2822
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You parked your car for five years?
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Old 11-30-2014, 01:24 AM   #2823
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Quote:
Originally Posted by SH4GG1NWAG0N View Post
So quick question for the experts, i currently have a pretty much stock 02 wrx wagon. It has walbro 255 fuel pump, different fuel filter, turbo xs fuel rails, 750cc injectors, short ram intake, ported turbo, new spark plugs, and i think that's pretty much it. But the car really needs tuned and before i get it tuned i would like to do all the upgrades necessary to run e85 and I'm wondering if you guys could tell me if what i have is sufficient enough or if i need more

Thanks in advance!
If you haven't already, make sure to research trans limitations on the '02 model. '02 has the weakest tranny of them all, and it was upgraded with a 1mm wider gear in 2003 as I understand it.

Also, 750cc injectors are pretty small for e85. You can run e on them, but you may be limited. You may fight that limitation by running a blend of e85 and 91 or 93...whatever you have access to. Your tuner can advise you of that during the tune, just tell him what your plans are. He'll prob be able to tell you for sure off the top of his head if 750's are enough.
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Old 12-01-2014, 01:40 PM   #2824
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Quote:
Originally Posted by stealth_ninja View Post
So I read through the first two pages, I have a bone stock 2013 and am interested in doing this. All I need to do is get bigger injectors, better boost control module, and better TMIC? My end goal is to achieve 100% E85 btw.
Stock TMIC is fine, but you also need a fuel pump and downpipe.
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Old 12-02-2014, 09:44 PM   #2825
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If your tuned specifically for your setup for example 06wrx, vf39, turbo inlet, uppipe, stock injectors on an e-tune,.... How much if any of a blend of e-85 would be safe to run? 10%? Will the ECU adjust any even with the reflash tune that is set up for 93oct?


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