Welcome to the North American Subaru Impreza Owners Club Monday April 24, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Go Back   NASIOC > NASIOC Technical > Engine Management & Tuning

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
Prev Previous Post   Next Post Next
Old 02-13-2006, 09:45 PM   #1
Scooby Guru
Member#: 9960
Join Date: Sep 2001
Location: in bed...
2002 Impreza WRX
WRBlue Perl

Default Questions regarding winter fuel....

I have done a search for this but could not find the solution to my problem.
Thought my questions were more related to the tuning aspect of things, but if not, MOD's please accept my appologies.

Now, I know that with winter gas, the additives that are added to the gas to aid winter startup and all that good stuff tend to reduce the amount of energy that each molecule of gas supplies.... Is this correct?

I notice the worse gas milage also during the winter, and although it is partly because of the amount of time we spend idling the cars to warm them up, is another reason for the gas milage because the car runs leaner during winter, so the ecu needs to dump in more fuel during each combustion stroke to compensate? Or is this more because of the makeup of the winterfuel?

During winter, is 94 octane gas is really 94 octane gas, and more like 92 or the like?

Finally, does the nature of winter fuel mean that it might not be a good idea to get a good dyno tune for optimum power with it in the tank? Or is one better off waiting for the summer blend to kick back in?

Thanks guys.
jigga 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
Questions regarding Fuel Pump and Downpipe scrapiron7 Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) 4 03-12-2008 03:20 PM
question regarding fuel pump and injectors... Kannekt Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 5 09-26-2006 04:33 PM
Correct Me on Something.... regarding biodiesel fuel... skimmilk68 Off-Topic 9 03-01-2006 03:14 PM
Quick question regarding breaking in a new Toyota... Fred Fredburger General Forum Archive 9 03-30-2001 09:19 PM
question regarding stromung randolph-rs General Forum Archive 1 03-06-2001 06:41 PM

All times are GMT -4. The time now is 07:22 PM.

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.