Welcome to the North American Subaru Impreza Owners Club Sunday September 24, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Rocky Mountains Impreza Club
Go Back   NASIOC > NASIOC Chapters > Rocky Mountains Impreza Club Forum -- RMIC

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. 
Thread Tools Display Modes
Old 01-04-2004, 01:45 PM   #1
Scooby Newbie
Member#: 6029
Join Date: Apr 2001
Chapter/Region: MWSOC
Location: Dublin, Ohio, USA
06&8 STI

Question high altitude fuel requirments for XT

Im hoping to get some help from you guys up in the mountains. I have a customer who is moving there in a few months and is worried about fuel availability and requirments. The Forester XT recomends 91AKI, however he has found that this fuel isnt always available in the higher altitudes. What kind of fuel do you guys run in your turbo cars? Thanks for your help
* Registered users of the site do not see these ads.
Scooby43055 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 01-04-2004, 01:51 PM   #2
Matt Monson
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
99 2.5RS, '85 911
'73 914 and 2012 BRZ


At least anywhere I have ever been in Colorado and Utah you can get 91. There are plenty of STi's and XT's running around here, not to mention butt loads of WRX's...
Matt Monson is offline   Reply With Quote
Old 01-04-2004, 02:25 PM   #3
Scooby Newbie
Member#: 14238
Join Date: Jan 2002
Location: Lafayette, CO
2002 WRX Wagon - PSM
Alfas: 89 Milano | 72 GTV


Yeah, 91 octane is readily available. It's the 92-94 octane avialable East of the Mississippi that isn't common out here.
alfaguy is offline   Reply With Quote
Old 01-04-2004, 05:22 PM   #4
Scooby Specialist
Member#: 14141
Join Date: Jan 2002
Location: [email protected] @ 5800 ft on 13T
2002 Impreza WRX

Default Not a problem

Tell your client not to worry, 91 octane is available everywhere here in Colorado. I've lived up here all my life and been in every county of the state many times. Driven over 500 thousand miles up here.

Also keep in mind that due to the higher altitude the engines octane requirement is less due to lower cylinder pressures.

Many of us run 16 -17 psi on 91 octane pump fuel with no problems. (atmospheric pressure up here is about 12.2 - 11.8 psi due to altitude, so your actual manifold pressure will be lower than at sea level).

Not until you start running 17+psi boost do you need to start running higher octane fuels.

hotrod is offline   Reply With Quote
Old 01-05-2004, 12:29 AM   #5
Scooby Newbie
Member#: 50710
Join Date: Dec 2003

I've seen 91 octane at every station I've seen in CO. Also my wrx seems to do just great going from 5200 feet to 11200 feet in about an hour or so. The ecu works well, and the turbo is a big help getting up the mountain. A good choice.
danswrx is offline   Reply With Quote
Old 01-05-2004, 02:55 AM   #6
Scooby Newbie
Member#: 51729
Join Date: Jan 2004

yup EVERY reputable gas station has 91...... ive never seen one without it.
AV630 is offline   Reply With Quote

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel requirements for an Evo3 16g BugeyeStyle South West Impreza Club Forum -- SWIC 23 04-14-2009 02:01 AM
IL / FS: Perrin High-Flow Fuel Rail for 2004-UP STi and Forester XT/Baja Turbo BNIB UV BN RXD Engine/Power/Exhaust 24 11-25-2006 07:31 PM
IL: Perrin High Flow Fuel Rails For STi, Baja XT, Forster XT UV BN RXD Engine/Power/Exhaust 3 09-29-2006 05:43 PM
ATTN: Track guys and autocrossers: STi High-G fuel pump for sale Porsche914boxer4 Private 'For Sale' Classifieds 9 09-20-2004 11:55 AM
High altitude fuel requirements ColoradoWRXGirl Newbies & FAQs 2 11-01-2002 08:47 AM

All times are GMT -4. The time now is 03:09 AM.

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