Welcome to the North American Subaru Impreza Owners Club Monday September 15, 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 General > Newbies & FAQs

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 08-26-2014, 08:38 AM   #1
PS05xWRX
Scooby Newbie
 
Member#: 398632
Join Date: Aug 2014
Chapter/Region: RMIC
Location: Colorado Springs
Vehicle:
2005 WRX Wagon

Default how to swap back to 91 from e85

Hello, I'm currently running e85 and yes I know I've heard that ithe is wonderful and yes I do like how cheap it is lol but I'm throwing a check engine light because of it I believe. I had it scanned and there was 4 issues that was causing it to throw a code if I remember correctly. 1 and 2 was spark plugs and coil packs which was not cheap haha, and it also said that either my injectors or fuel pump is causing it to become to rich. Basically I'm just done with it for now and I do a lot of trips out of town where there is not any e85. So if you guys could give me info on what to do that would be much appreciated. Thanks!
* Registered users of the site do not see these ads.
PS05xWRX is offline   Reply With Quote
Old 08-26-2014, 08:50 AM   #2
Emergent
Scooby Newbie
 
Member#: 359872
Join Date: Jun 2013
Chapter/Region: SCIC
Location: Riverside, CA
Vehicle:
2013 WRX Hatch
WRB

Default

Is your vehicle tuned for E85?

*Edit* Haven't done the E85 conversion myself yet, but I don't think you're tuned for it. Considering you bought an access port to tune the car? Anyway, no bueno from my limited knowledge on the subject. Needs a pro tune.

Last edited by Emergent; 08-26-2014 at 08:57 AM.
Emergent is offline   Reply With Quote
Old 08-26-2014, 08:58 AM   #3
dark hawk
Scooby Newbie
 
Member#: 393025
Join Date: Jun 2014
Location: Cedar Rapids, IA
Vehicle:
2009 wrx
black

Default

Get a tune if you don't have one and read the e85 FAQ, then come back here.
dark hawk is offline   Reply With Quote
Old 08-26-2014, 09:07 AM   #4
Loyale93
n00b Moderator
Moderator
 
Member#: 91347
Join Date: Jul 2005
Chapter/Region: NESIC
Location: Moscow, Russia
Vehicle:
'13 XV Crosstrek,
1050 Triumph Speed Triple

Default

See above two comments. If you're not tuned for E85, you're going to have huge issues. Nothing wrong with an AP to tune for it, but it needs to be a pro-tune via the AP, not just an OTS tune.
More info please.

That said, if you are switching back, you should be able to drain your tank of E85 and just fill up with the right stuff.
Loyale93 is offline   Reply With Quote
Old 08-26-2014, 09:44 AM   #5
HinshawWRX
Medium Frank
Moderator
 
Member#: 140114
Join Date: Feb 2007
Chapter/Region: MAIC
Location: Common Sense, VA
Vehicle:
2014 Porsche
GT3 (Currently on Fire)

Default

According to yourself here http://forums.nasioc.com/forums/show....php?t=2655611 it would seem you are not tuned for this.
HinshawWRX is offline   Reply With Quote
Old 08-26-2014, 02:53 PM   #6
PS05xWRX
Scooby Newbie
 
Member#: 398632
Join Date: Aug 2014
Chapter/Region: RMIC
Location: Colorado Springs
Vehicle:
2005 WRX Wagon

Default

Well when I bought the car the guy told me it was tuned for e85 which I'm not sure if that is true at this point in time. And no I do not have an acessport but may be buying one soon. Would it be an issue if I drain the e85 and run some 91 in it? Do I have to completely drain all the gas out of the engine or is just draing the tank good enough? I'm just upset because it sound funny has a the rmps are moody at idle and it so sluggish till I hit boost at 4,500-5,000rpms. Thanks again guys.
PS05xWRX is offline   Reply With Quote
Old 08-26-2014, 03:11 PM   #7
Loyale93
n00b Moderator
Moderator
 
Member#: 91347
Join Date: Jul 2005
Chapter/Region: NESIC
Location: Moscow, Russia
Vehicle:
'13 XV Crosstrek,
1050 Triumph Speed Triple

Default

If your car is tuned for E85 and you put 91 in it... that's bad news bears as well. How about you bring your car to a reputable shop in your area (which we could recommend if you fill in your profile) and get it properly checked out. There's no way for us to know whether your car is tuned or not. Acting on assumptions that it is or isn't will have drastic differences in the type of explosion you experience by just spitballing problems and answers.
Loyale93 is offline   Reply With Quote
Old 08-26-2014, 03:39 PM   #8
nmlittlebigman
Scooby Specialist
 
Member#: 321409
Join Date: May 2012
Chapter/Region: SWIC
Location: Arrey, NM
Vehicle:
2015 WRX LTD
WRB

Default

Take Loyale93's advice^^^Find a reputable shop. If all else fails find someone with a tactrix cable. Ask them to pull a Learningview on your car. Post the Learningview up in the engine management forum. A quick look should reveal whether or not you are tuned for E85.
nmlittlebigman is offline   Reply With Quote
Old 08-26-2014, 03:57 PM   #9
Brent22
Scooby Specialist
 
Member#: 350169
Join Date: Mar 2013
Chapter/Region: MAIC
Location: Lancaster, Pennsylvania
Vehicle:
2013 WRX Hatch
WRB

Default

1) Why did you buy a car that runs e85 if you know nothing about it?
2) Why did you buy a car that runs e85 if you're frequently unable to get it?
3) Why did you buy a heavily modded (for lack of a better word) car without having it checked out?
4) See #1, #2, and #3
Brent22 is offline   Reply With Quote
Old 08-26-2014, 04:21 PM   #10
Brother EddieJ.
Scooby Specialist
 
Member#: 181617
Join Date: Jun 2008
Chapter/Region: MAIC
Location: frederick, md
Vehicle:
2004 wrx
6speed/ 330whp/ 300wtq

Default

Not tuned for e85 you should be throwing a lean code.

Stop using it before you go boom. Spend the extra dollar per gallon to save thousands in the long run
Brother EddieJ. is online now   Reply With Quote
Old 08-27-2014, 07:07 AM   #11
PS05xWRX
Scooby Newbie
 
Member#: 398632
Join Date: Aug 2014
Chapter/Region: RMIC
Location: Colorado Springs
Vehicle:
2005 WRX Wagon

Default

Thank for all the feed back I'm taking my wrx to a tuning shop in town tomorrow
PS05xWRX is offline   Reply With Quote
Old 08-27-2014, 07:38 AM   #12
ninjaboy76
Scooby Newbie
 
Member#: 33456
Join Date: Feb 2003
Location: Wichita, KS
Vehicle:
2015 WRX
WRBP

Default

I'm surprised the car is running at all on straight e85 if its not tuned for it. E85 requires more fuel, thus you need to have larger injectors and a fuel pump as well. Then the car has to be tuned. It's ok to have a few gallons of the stuff in there as long as you completely fill up the tank with 91. But running nothing but E85 and not be tuned for it is crazy.
ninjaboy76 is offline   Reply With Quote
Old 08-27-2014, 06:33 PM   #13
PS05xWRX
Scooby Newbie
 
Member#: 398632
Join Date: Aug 2014
Chapter/Region: RMIC
Location: Colorado Springs
Vehicle:
2005 WRX Wagon

Default

I'm getting it tuned at a local shop which is good. Basically they said I need a walbro 255 and 850cc injectors. Now one of my buddies is telling me I need to upgrade my fuel lined because that 255 will blow inlet and outlets all day??.?.,.,?? I'm not sure he may be right but I just want to hear what you folks think. Thanks
PS05xWRX is offline   Reply With Quote
Old 08-27-2014, 06:39 PM   #14
nmlittlebigman
Scooby Specialist
 
Member#: 321409
Join Date: May 2012
Chapter/Region: SWIC
Location: Arrey, NM
Vehicle:
2015 WRX LTD
WRB

Default

Listen to your tuner.


Edit: I take it from needing larger pump and injectors that your car was not tuned for E85.
nmlittlebigman is offline   Reply With Quote
Old 08-27-2014, 06:51 PM   #15
PS05xWRX
Scooby Newbie
 
Member#: 398632
Join Date: Aug 2014
Chapter/Region: RMIC
Location: Colorado Springs
Vehicle:
2005 WRX Wagon

Default

Its tuned for it but the scum bag I bought it from didn't do the conversion completely like he said he did :/
PS05xWRX is offline   Reply With Quote
Old 08-27-2014, 07:01 PM   #16
IheartAWD
Scooby Newbie
 
Member#: 329962
Join Date: Aug 2012
Chapter/Region: BAIC
Location: Bay Area
Vehicle:
2004 WRX TD04HL-20T
WRB

Default

Quote:
Originally Posted by PS05xWRX View Post
Its tuned for it but the scum bag I bought it from didn't do the conversion completely like he said he did :/
Should have done more research before you buy. A good car inspection takes about 60 minutes. Money is hard to come by, shouldn't rush it.
IheartAWD is offline   Reply With Quote
Old 08-27-2014, 07:05 PM   #17
nmlittlebigman
Scooby Specialist
 
Member#: 321409
Join Date: May 2012
Chapter/Region: SWIC
Location: Arrey, NM
Vehicle:
2015 WRX LTD
WRB

Default

Sorry to hear. You might want to spend some time reading the E85 thread on here:

http://forums.nasioc.com/forums/showthread.php?t=803341
nmlittlebigman is offline   Reply With Quote
Old 08-27-2014, 07:19 PM   #18
HinshawWRX
Medium Frank
Moderator
 
Member#: 140114
Join Date: Feb 2007
Chapter/Region: MAIC
Location: Common Sense, VA
Vehicle:
2014 Porsche
GT3 (Currently on Fire)

Default

Quote:
Originally Posted by PS05xWRX View Post
Its tuned for it but the scum bag I bought it from didn't do the conversion completely like he said he did :/
Hence why a good professional inspection is key prior to purchasing ANY modified car.
HinshawWRX is offline   Reply With Quote
Old 08-27-2014, 07:42 PM   #19
SubyLarry
Scooby Newbie
 
Member#: 289426
Join Date: Jul 2011
Chapter/Region: SCIC
Location: Lakewood, CA.
Vehicle:
2002 Impreza WRX
MBP

Default

If you bought a Cobb Accessport, you can have dual maps ready and switch on the fly; one map for e85 when that fuel is available and another for 91 octane when that is all that is left.

As for upgrading fuel lines because of a wally 255, you do not need to upgrade your fuel lines.

All that is needed for e85 are upgraded injectors (preferably greater than 900cc) and a bigger fuel pump (walbro 255 is enough) with a proper tune. Hope that helps.
SubyLarry is offline   Reply With Quote
Old 08-28-2014, 03:07 AM   #20
PS05xWRX
Scooby Newbie
 
Member#: 398632
Join Date: Aug 2014
Chapter/Region: RMIC
Location: Colorado Springs
Vehicle:
2005 WRX Wagon

Default

Quote:
Originally Posted by SubyLarry View Post
If you bought a Cobb Accessport, you can have dual maps ready and switch on the fly; one map for e85 when that fuel is available and another for 91 octane when that is all that is left.

As for upgrading fuel lines because of a wally 255, you do not need to upgrade your fuel lines.

All that is needed for e85 are upgraded injectors (preferably greater than 900cc) and a bigger fuel pump (walbro 255 is enough) with a proper tune. Hope that helps.
Thanks
PS05xWRX is offline   Reply With Quote
Old 08-28-2014, 03:34 AM   #21
Brother EddieJ.
Scooby Specialist
 
Member#: 181617
Join Date: Jun 2008
Chapter/Region: MAIC
Location: frederick, md
Vehicle:
2004 wrx
6speed/ 330whp/ 300wtq

Default

Quote:
Originally Posted by PS05xWRX View Post
Now one of my buddies is telling me I need to upgrade my fuel lined because that 255 will blow inlet and outlets all day??.?.,.,?? I'm not sure he may be right but I just want to hear what you folks think. Thanks
No idea what that means at all. I have been running a 255lhp for years and I have no blowing of anything with 750cc injectors. I have stock lines and fuel rails. Your friend is confused. I also had one on my ls/vtec supercharged integra and had zero issues as well. Along with stock lines and upgraded AEM rail. Don't worry and listen to your tuner, not the internet, and definitely not your friend.
Brother EddieJ. is online now   Reply With Quote
Old 08-29-2014, 05:42 PM   #22
PS05xWRX
Scooby Newbie
 
Member#: 398632
Join Date: Aug 2014
Chapter/Region: RMIC
Location: Colorado Springs
Vehicle:
2005 WRX Wagon

Default

Okay one last question guys and I'll stop. I just got my cobb ap and I want to install it to see if it's unmarried like I was told. Now When install the AP will it erase the e85 tune that I have on there now and I would just have to use 91 now? Or will I be okay to use 85? I don't know exactly how to word it but I guess I'm just trying to ask if the AP will erase/flash the old tune off and install it's own....
PS05xWRX is offline   Reply With Quote
Old 08-29-2014, 05:49 PM   #23
HinshawWRX
Medium Frank
Moderator
 
Member#: 140114
Join Date: Feb 2007
Chapter/Region: MAIC
Location: Common Sense, VA
Vehicle:
2014 Porsche
GT3 (Currently on Fire)

Default

You really need to figure out how it was tuned, that should have been the first step. Just buying an AP won't solve anything. If the previous owner was tuned with an AP, the ecu can be locked. (I can't remember if you said previous owner tuned with anything specifically)

Not to mention, if you have upgraded injectors, the AP also won't do anything for you in the stock form. You'll need a tune from a tuner, be it an "e-tune" (emailed tune) or pro tune.
HinshawWRX is offline   Reply With Quote
Old 08-29-2014, 06:19 PM   #24
nmlittlebigman
Scooby Specialist
 
Member#: 321409
Join Date: May 2012
Chapter/Region: SWIC
Location: Arrey, NM
Vehicle:
2015 WRX LTD
WRB

Default

Quote:
Originally Posted by PS05xWRX View Post
I'm getting it tuned at a local shop which is good.
This ^^^
Your tuner should be able to answer all of your questions even about the accessport. If not get another tuner.
nmlittlebigman is offline   Reply With Quote
Old 08-30-2014, 02:03 AM   #25
PS05xWRX
Scooby Newbie
 
Member#: 398632
Join Date: Aug 2014
Chapter/Region: RMIC
Location: Colorado Springs
Vehicle:
2005 WRX Wagon

Default

Thanks
PS05xWRX 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


All times are GMT -4. The time now is 01:02 AM.


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.