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Old 11-18-2010, 10:20 AM   #1801
amalgrover
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the fuel rails must be different though...i only know this because i have a 2006 wrx longblock and i re-used my 2002 wrx fuelrails and tgv's. i guess i should have specified even more, but i just assumed that everyone would know what i meant when they saw that i have an 02 with a 2.5L. I will clarify for the record...

If you are swapping 02-05wrx fuel rails onto a 2.5L and keeping the AVCS stuff you will have to work the fuel lines a little bit to fit around everything.
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Old 11-18-2010, 10:20 AM   #1802
Phatron
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what he's saying is that the AVCS lines on an 04-06 STi are in the way if you do a top feed conversion....

on the 07+ they are not in the way since the car came with top feeds......and subaru positioned the lines where they needed to be from the factory.
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Old 11-18-2010, 10:21 AM   #1803
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^ Ron FTW again
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Old 11-19-2010, 12:17 PM   #1804
Greenracer6
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100% E85 of course

I know theres alot of debate out there over timing with heat ranges but what are your plugs of choice?

**Now for an informational help to others make sure to say boost levels and what you tried that worked/did not work

Or your ideas on whp vs heat range
just an example:
300-400whp = 7's
400-500whp = 7's or 8's
500-600whp = 7 - 9's (anybody try the 9's? BKR9EIX ???)

Format:::
On E85 with GT30R 2.0L:
I've been running BKR7EIX gapped to .022 and 23psi ran great, hard to start on cold starts, so I tried to just change to BKR6E V power gapped to .025 for cranking reasons and cannot run over 19psi with out a spark blowout, so I will be swapping back to the 7's and small gap or even try to find bkr8e to run in the .025-.022 range at the higher 23-30psi boost.
Weather has been in the 60's to low 40's

Edit:
Those DR12S Silvers look pretty awesome (similar to ngk 8 range)




Last edited by Greenracer6; 11-19-2010 at 04:41 PM. Reason: edit
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Old 11-19-2010, 12:40 PM   #1805
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Brisk Racing Silver Plugs gapped to .028"

27psi, no spark blowout on 100% e85.

ER12S for AVCS heads.

DR12S for 2L WRX heads
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Old 11-19-2010, 03:17 PM   #1806
johnathon.sprague
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how do you know if you getting spark blow out? I'm getting some flkc and fbkc during wot pulls in the upper rpms at timing levels well below what I should be able to run with E85. I'm running bkr6e with .028 gap.
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Old 11-19-2010, 04:08 PM   #1807
john 1badSTI
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ngk stock# 2309(lfr7aix) hta86 30psi 100% e85 no blowout,but once the air temps from colder weather start dropping the idle is still 14.4-14.8 but does not seem as smooth,a little more lopey.I think its due to ethanol's cold nature and when air temps get colder the fuel does not want to atomize and stay suspended as well with the in coming air charge.To greenracer it looks like going to a non iridium plug might have caused your issues,maybe.I still believe in running an ignition booster,just my .02.oh almost forgot .025 gap
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Old 11-19-2010, 04:14 PM   #1808
john 1badSTI
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^^^I also had good luck with stock heat range plugs ngk stock#6619 with no blowout,just decided to run 1 step colder for safety at the power I am at right now but like I posted above when temps drop I would recommend running stock heat range to keep more heat in the cylinder,remember heat is energy and with e85 burning cooler and colder outside air temps the added heat will help startups and driveability.
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Old 11-19-2010, 05:03 PM   #1809
02RexWI
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The heat range of the plug just refers to the amount of heat that is transferred to the cylinder head if I recall correctly... it shouldn't have much effect on combustion temperature.
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Old 11-19-2010, 05:09 PM   #1810
john 1badSTI
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no it has effect on in cylinder temps,if you go too cold on a plug it will not generate enough heat to keep itself clean and will prematurely get fouled,have seen it happen first hand that is why Phil from element swears by stock heat range for e85 applications.
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Old 11-19-2010, 08:02 PM   #1811
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veddy itawesting.
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Old 11-20-2010, 06:29 PM   #1812
amalgrover
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i am running stock heat range plugs gapped to .023 and it runs like a champ. i tried running 1 step colder and honestly i had lots of low load misfires that my knock sensor was interpreting as knock and after just 4000 miles the plugs were fouled. changed back to stock heat range and haven't had a problem since.


...btw i am running 25psi and about 460whp right now, but i have run as much as 28psi on this setup without any spark blowout...
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Old 11-20-2010, 06:40 PM   #1813
john 1badSTI
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^^That sounds about right for most running the E,the reason I can get away with 1 step colder is because I have one of the old xsengineering ignition boosters on my car which ramps the primary voltage to the coils from 13.5-14v to 21v.
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Old 11-20-2010, 07:03 PM   #1814
amalgrover
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i am actually thinking about getting an ignition booster...i have heard good things about the sun auto one, and its pretty cheap. i plan on doing quite a few things electrically to help "smooth" things out when i get back from afghanistan (grounding kit, FIC Easy Tune box for my injectors, the ignition booster, etc.)...i also plan to install my second fuel pump so i can get power back up where it should be ...
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Old 11-20-2010, 07:07 PM   #1815
john 1badSTI
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oh man I didn't know you were in the armed forces,be careful over there and holler at me when you get back and I will help you with the proper stuff needed to add another pump and get the most out of them.I wish xsengineering still made the box I have it was only 275.00 and fit all kinds of cars and came with per vehicle wiring instructions and took literally 20min. to hook up.
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Old 12-01-2010, 02:42 PM   #1816
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Well My scoob is one of the cars that will be running the new DeatschWerks 300LPH intank fuel pump, before the release date. DW wanted to get a few pumps to a handfull of tuners to start using these pumps. I happen to be in the market for more fuel at the right time. Ill be getting tuned by Dave Brown at MSPT in a few weeks. I'll be tuned on 93oct pump gas, and ofcourse E85

My scoob should be a whole new animal.

Last edited by rexworx; 12-01-2010 at 02:50 PM.
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Old 12-01-2010, 03:30 PM   #1817
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I need a couple! My sti is out of fuel pump on a single walbro.
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Old 12-01-2010, 04:29 PM   #1818
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Yeah its really more then i need right now but will never need to upgrade. down the road I like to put in a surge tank and have the DW 300LPH after it. Then put the old 255 back intank. Run the DW on factory wiring and the 255 on 12v via relay to run at 100%

Just a thought...

My car is by no means fast compaired to some others here, but does the trick for now.
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Old 12-01-2010, 05:14 PM   #1819
john 1badSTI
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sent you a pm Dom.
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Old 12-01-2010, 07:11 PM   #1820
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A few questions concearning the E85 and ignition. First I guess some background of the car (Dom chime in anytime as he is the man in charge of the build). I had the car running but had a bad short block from a crappy builder (NOT DOM!!!) and basicly got some ground work done for the car i.e. basic tune on aem standalone, fuel system check ect. Car = 2005 STi using a custom block from MPS and custom heads =1mm valves with custom seats with bigger cams in the area of a 276 I think. Turbo is HTA3586 big HTA, twin 044's, swirl pot and id2000 injectors.

So I have the HKS Dual ignition 2 has anyone used it? I noticed when I put it on 2 years ago with the stock block and a standard gt35 it seemed to run smoother. Then what plugs and gap? (more a question to Dom). I have never used brisks only the nipps and ngk's iridiums.. I plan on running E85 full time in this car.

Last edited by Sinister redlines; 12-01-2010 at 07:22 PM.
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Old 12-02-2010, 11:01 AM   #1821
Phatron
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Quote:
Originally Posted by john 1badSTI View Post
^^^I also had good luck with stock heat range plugs ngk stock#6619 with no blowout,just decided to run 1 step colder for safety at the power I am at right now but like I posted above when temps drop I would recommend running stock heat range to keep more heat in the cylinder,remember heat is energy and with e85 burning cooler and colder outside air temps the added heat will help startups and driveability.
Quote:
Originally Posted by john 1badSTI View Post
ngk stock# 2309(lfr7aix) hta86 30psi 100% e85 no blowout,but once the air temps from colder weather start dropping the idle is still 14.4-14.8 but does not seem as smooth,a little more lopey.I think its due to ethanol's cold nature and when air temps get colder the fuel does not want to atomize and stay suspended as well with the in coming air charge.To greenracer it looks like going to a non iridium plug might have caused your issues,maybe.I still believe in running an ignition booster,just my .02.oh almost forgot .025 gap

John has the same turbo

ngk stock# 2309(lfr7aix)
0.025 Gap
1 Step Colder
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Old 12-02-2010, 05:17 PM   #1822
john 1badSTI
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Thanks for reposting that info for him Ron.Also my friend brian M.(SWOOPG) who I have built motors for runs the hks box and it fixed his misfire issues at high boost on gas and e85.
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Old 12-02-2010, 07:51 PM   #1823
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Hey you E85 GURU's do i need to anodize my surge tank to run E85? i was told it will eat the aluminum inside and also can i run one or two steps colder with the HKS ignition system?

Cheers
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Old 12-02-2010, 08:04 PM   #1824
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I have a 2011 WRX that will soon be Stage 2 (COBB downpipe and SPT cat back exhaust).

If I were to upgrade to E85 (and retune), how much power should I expect to gain?

This is what I was looking at getting (plus the turbo back exhaust):

http://www.rallysportdirect.com/Deat...-STI-2007-2011
http://www.rallysportdirect.com/AVO-...r-XT-2009-2010
http://www.rallysportdirect.com/Grim...-WRX-2008-2011
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Old 12-02-2010, 08:43 PM   #1825
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^^ You'll be wanting larger injectors in no time with 850cc's on e85.
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