Welcome to the North American Subaru Impreza Owners Club Tuesday November 20, 2018
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC General > General Community

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 10-14-2018, 10:35 PM   #1
Pablo808
Scooby Newbie
 
Member#: 480872
Join Date: Jan 2018
Default Running 92 on 91 tune.

Hey, so I just got an AP on the forums.
Is it okay to be running 92 octane on 91 tune?
I live in Hawaii and neither 91 and 93 are available.
The highest I fill up is at 92 since that's what we've got.
I have a 2016 WRX.
Car is completely stock other than Axleback exhaust and BOV
Thanks.
* Registered users of the site do not see these ads.
Pablo808 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 10-14-2018, 11:51 PM   #2
GlarryHoodDIT
Scooby Specialist
 
Member#: 460907
Join Date: Jan 2017
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2016 WRX

Default

You will be ok, you can use a higher octane just not a lower one. As long as it's E10 92 and not E0 92 you will be fine. If it doesn't explicitly say E0 then it's E10.
GlarryHoodDIT is offline   Reply With Quote
Old 10-15-2018, 01:24 AM   #3
Pablo808
Scooby Newbie
 
Member#: 480872
Join Date: Jan 2018
Default

Quote:
Originally Posted by GlarryHoodDIT View Post
You will be ok, you can use a higher octane just not a lower one. As long as it's E10 92 and not E0 92 you will be fine. If it doesn't explicitly say E0 then it's E10.
Thanks for the feedback.
E10 speaking it contains 10% ethanol and E0 containing 0% ethanol?
I don't know if it's E10 or not. How would I find out?
Pablo808 is offline   Reply With Quote
Old 10-15-2018, 11:38 AM   #4
Loyale93
Newbie Moderator
Moderator
 
Member#: 91347
Join Date: Jul 2005
Chapter/Region: NESIC
Location: Boston, MA
Vehicle:
2004 Tacoma Crew Cab
2012 Triumph 1050

Default

It should say right on the pump. I would think they have to have that on there as a legal thing.
Loyale93 is online now   Reply With Quote
Old 10-15-2018, 11:44 AM   #5
Wayne Suhrbier
Scooby Newbie
 
Member#: 144044
Join Date: Mar 2007
Chapter/Region: South East
Location: Alabama
Vehicle:
2006 STI
OBP

Default

at least around here the few stations that carry E0 charge about $1 more per gallon
Wayne Suhrbier is online now   Reply With Quote
Old 10-15-2018, 12:09 PM   #6
rtv900
Scooby Specialist
 
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:
2016 STI

Default

First off it doesn't matter if it's E0, 92 is fine either way on a 91 tune, reasoning to follow.

second, it is NOT E10 if it simply doesn't say E0 unless fuel labeling is a state by state law, which I seriously doubt it is.
Pumps specifically say "may contain UP TO 10% ethanol"
They do not say 10% right on the money, anywhere from zero to ten.
Basically, you have zero clue what so ever whether you are even getting ethanol let alone the quantity because 'up to' still includes zero.
rtv900 is offline   Reply With Quote
Old 10-15-2018, 01:34 PM   #7
GlarryHoodDIT
Scooby Specialist
 
Member#: 460907
Join Date: Jan 2017
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2016 WRX

Default

Quote:
Originally Posted by Pablo808 View Post
Thanks for the feedback.
E10 speaking it contains 10% ethanol and E0 containing 0% ethanol?
I don't know if it's E10 or not. How would I find out?
Correct. You've seen it before you just didn't realize it, it's that little note that says something like "This fuel contains up to 10% ethanol." Like I said, if it doesn't explicitly state E0 then it's not. The reason I brought it up is because Cobb explicitly states their maps are designed to be used only with E10 fuel, and if only E0 is available then it needs to be data logged to ensure there isn't detonation.
GlarryHoodDIT is offline   Reply With Quote
Old 10-15-2018, 05:47 PM   #8
get_schwifty
Scooby Newbie
 
Member#: 485973
Join Date: May 2018
Location: In a house
Vehicle:
2018 WRX STI
Red

Default

I find it very interesting how availability is so varied. Here in my part of Maryland there is mainly 93 and some 91, but 92 is an absolute rarity. I once came across a station with 92 and I was so excited I uploaded a picture of it to Facebook, where other people in my area marveled as if I had discovered the missing link.

(we live exciting lives)
get_schwifty is offline   Reply With Quote
Old 10-16-2018, 07:23 AM   #9
cerbomark
Scooby Specialist
 
Member#: 475983
Join Date: Oct 2017
Location: Upstate NY
Vehicle:
2018 WRX Limited
Silver

Default

Quote:
Originally Posted by GlarryHoodDIT View Post
Correct. You've seen it before you just didn't realize it, it's that little note that says something like "This fuel contains up to 10% ethanol." Like I said, if it doesn't explicitly state E0 then it's not. The reason I brought it up is because Cobb explicitly states their maps are designed to be used only with E10 fuel, and if only E0 is available then it needs to be data logged to ensure there isn't detonation.
Appreciate this post, been having slight knocks on a Cobb 91 tune, using 91 E0.
Have been using 93 E10 to try to eliminate. I forgot Cobb did test with E10.
Not to highjack thread, just a good point to remember by GARRY.
cerbomark is offline   Reply With Quote
Old 10-16-2018, 06:59 PM   #10
GlarryHoodDIT
Scooby Specialist
 
Member#: 460907
Join Date: Jan 2017
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2016 WRX

Default

Quote:
Originally Posted by cerbomark View Post
Appreciate this post, been having slight knocks on a Cobb 91 tune, using 91 E0.
Have been using 93 E10 to try to eliminate. I forgot Cobb did test with E10.
Not to highjack thread, just a good point to remember by GARRY.
Full quote from Cobb if anyone else is interested.

Quote:
Originally Posted by Cobb Map Notes
These maps are designed for E10 fuel (fuel with 10% ethanol content). For those who only have access to E0 fuel (fuel with 0% ethanol) it is recommended to use the "91" octane version of the maps and datalog the car to ensure your fuel is performing to the necessary level. This is especially important for those using Canadian 94 octane E0 fuel.
GlarryHoodDIT is offline   Reply With Quote
Old 10-16-2018, 07:48 PM   #11
BHOD
Scooby Newbie
 
Member#: 463264
Join Date: Feb 2017
Chapter/Region: E. Canada
Location: Québec
Vehicle:
2018 WRX sport, 6MT
crystal BLACK silica

Default

Quote:
Originally Posted by GlarryHoodDIT View Post
Full quote from Cobb if anyone else is interested.

Quote:
Originally Posted by Cobb Map Notes
These maps are designed for E10 fuel (fuel with 10% ethanol content). For those who only have access to E0 fuel (fuel with 0% ethanol) it is recommended to use the "91" octane version of the maps and datalog the car to ensure your fuel is performing to the necessary level. This is especially important for those using Canadian 94 octane E0 fuel.
Cobb is not up-to-date...

From Petro-Canada FAQs:
Quote:
Does Ultra 94 contain ethanol? Does Petro-Canada still offer an ethanol-free gasoline?
Ultra 94 contains ethanol. Due to the fact that various fuel grades are blended at the point of sale, most grades of Petro-Canada fuel may now contain up to 10% ethanol. This represents a change from the previous state, where premium fuel was ethanol-free at Petro-Canada.
BHOD is offline   Reply With Quote
Old 10-16-2018, 08:03 PM   #12
GlarryHoodDIT
Scooby Specialist
 
Member#: 460907
Join Date: Jan 2017
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2016 WRX

Default

Is that referring to all fuel in Canada or just Petro-Canada branded fuel?
GlarryHoodDIT is offline   Reply With Quote
Old 10-16-2018, 08:30 PM   #13
BHOD
Scooby Newbie
 
Member#: 463264
Join Date: Feb 2017
Chapter/Region: E. Canada
Location: Québec
Vehicle:
2018 WRX sport, 6MT
crystal BLACK silica

Default

Quote:
Originally Posted by GlarryHoodDIT View Post
Is that referring to all fuel in Canada or just Petro-Canada branded fuel?
It refers to Petro-Can.
But as far as I know, it's the only brand who offers (not everywhere) 94 in some provinces across Canada.

There is also Chevron supreme plus (94, E0(?)) (thanks Google) but they seem to be only in the west coast.
BHOD is offline   Reply With Quote
Old 10-16-2018, 08:40 PM   #14
GlarryHoodDIT
Scooby Specialist
 
Member#: 460907
Join Date: Jan 2017
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2016 WRX

Default

Freaking Canada. I can now see why Cobb just puts out a huge blanket statement though.
GlarryHoodDIT is offline   Reply With Quote
Old 10-16-2018, 09:06 PM   #15
BHOD
Scooby Newbie
 
Member#: 463264
Join Date: Feb 2017
Chapter/Region: E. Canada
Location: Québec
Vehicle:
2018 WRX sport, 6MT
crystal BLACK silica

Default

Quote:
Originally Posted by GlarryHoodDIT View Post
Freaking Canada. I can now see why Cobb just puts out a huge blanket statement though.
BHOD is offline   Reply With Quote
Old 10-20-2018, 11:58 PM   #16
Jake5857
Scooby Newbie
 
Member#: 492984
Join Date: Oct 2018
Default

I run 92 octane with the 91 tune. No idea if its E10 or E0, Fleet Farm doesn't say on their pumps!
Jake5857 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 11:12 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.