Welcome to the North American Subaru Impreza Owners Club Tuesday September 23, 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 Archives > NASIOC Archives > STi Forum Archive

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 08-07-2003, 01:57 PM   #1
Silky
Scooby Specialist
 
Member#: 2189
Join Date: Aug 2000
Chapter/Region: BAIC
Location: San Jose CA, USA
Vehicle:
2005 WRX STI
CGM

Default STI gas mileage trick

Fancy title just so people will look. I want to know for those of you who have taken a break from the intended purpose of this car (driving it fast on a back road/track) and used it to commute:

Have you tried putting your DCCD into full rear setting so it's mostly rear wheel biased and then watched your fuel economy? I would think it would go up some .... is this the case?

The reason I ask is because several people have drag raced with full rear settings and though the initial take off is slower their trap speeds have been higher.. so let me know.
* Registered users of the site do not see these ads.
Silky is offline  
Old 08-07-2003, 03:39 PM   #2
imprezaf
Scooby Specialist
 
Member#: 12403
Join Date: Nov 2001
Chapter/Region: Tri-State
Default

Gas mileage is better in 35/65. Not that it is much better, but it is.
imprezaf is offline  
Old 08-07-2003, 06:15 PM   #3
XT6Wagon
Scooby Specialist
 
Member#: 524
Join Date: Nov 1999
Location: WA
Vehicle:
04 STi
White

Default

It works, but only because the DCCD for some reason dials a little lock on corners with the automode. If the car was going perfectly straight for the whole tank of gas it would be a 0% difference.

And in town I would reccomend leaving it in auto just incase the rear tires get covered in something slick and you give it a little gas around a corner, the center diff can save you from backing into a pole or ditch.
XT6Wagon is offline  
Old 08-07-2003, 09:13 PM   #4
brunetmj
Scooby Specialist
 
Member#: 8023
Join Date: Jul 2001
Location: Way-upstate , NY
Vehicle:
2004 2.5 RS

Default

I am doing a little test right now. I am not overly concerned about gas mileage as I know this is a performance car. After three consecutive fill ups in which I averaged 22 miles per gallon I wondered how much mileage I could get from a tank if I drove like a little old man. I did this for two reasons:
1. because I am a little old man
and
2. Out of pure curiosity.

So I never exceeded 55 mph, never passed anyone and always shifted before 3K. This is rural route driving which is close to highway driving. I won't know the results until Saturday though.
However I can say this . It has been a very painful experience, driving this car , that slow. It should only be performed by highly trained drivers.
brunetmj is offline  
Old 08-07-2003, 10:07 PM   #5
Silky
Scooby Specialist
 
Member#: 2189
Join Date: Aug 2000
Chapter/Region: BAIC
Location: San Jose CA, USA
Vehicle:
2005 WRX STI
CGM

Default

You have incredible restraint. I'm not trying to taunt you but I know that you'll give in... everyone does... You'll hammer it at least once. It's like trying to get to the middle of a tootsie pop... you will bite it.
Silky is offline  
Old 08-07-2003, 11:08 PM   #6
Extraze
Scooby Specialist
 
Member#: 16980
Join Date: Mar 2002
Location: QC, Canada
Default

Shiftlight = 3500RPM ...

... works like a charm
Extraze is offline  
Old 08-08-2003, 04:52 PM   #7
brunetmj
Scooby Specialist
 
Member#: 8023
Join Date: Jul 2001
Location: Way-upstate , NY
Vehicle:
2004 2.5 RS

Default

The result of my test, mentioned above, was intersesting. I got 29.4 miles per gallon. No passing anyone,55 mph top speed and
easy shifting.
brunetmj is offline  
Old 08-08-2003, 05:30 PM   #8
brunetmj
Scooby Specialist
 
Member#: 8023
Join Date: Jul 2001
Location: Way-upstate , NY
Vehicle:
2004 2.5 RS

Default

Disregard that milage. When I got back in my car i noticed that the fuel gauge was not at the full mark. It took another 1.2 gallons and dropped this test milage to 25.6 miles per gallon. That is the first time that the back pressure on the gas nozzle
kicked the gas off without having a full tank. I have been driving Suabrus for over ten years.
Anyway I am not about to repeat this test..
brunetmj is offline  
Old 08-08-2003, 06:36 PM   #9
Javabean2
Scooby Specialist
 
Member#: 9752
Join Date: Aug 2001
Location: Berkeley
Vehicle:
2002 WRX Wagon
Silver

Default

At first I was mad because I HATE misleading thread titles, but if this is even marginally true, then I guess it does qualify as a mileage trick
Javabean2 is offline  
Old 08-08-2003, 10:47 PM   #10
brunetmj
Scooby Specialist
 
Member#: 8023
Join Date: Jul 2001
Location: Way-upstate , NY
Vehicle:
2004 2.5 RS

Default

Quote:
At first I was mad because I HATE misleading thread titles,
I agree with you. I originally intended to post my own thread on my little experiment . This thread just gave me an opportunity to make the best of it.
brunetmj is offline  
Old 08-10-2003, 06:24 PM   #11
kb3drfsti
Scooby Newbie
 
Member#: 41507
Join Date: Aug 2003
Location: dallas pa
Vehicle:
2004 sti
blue

Default

when you put the dccd control in manual and all the way to the bottom it is not more rear biased,It is still the same(35/65) and is not like a rear wheel drive car.This is what they say in the other threads about the dccd system. Matt
kb3drfsti is offline  
Old 08-10-2003, 09:05 PM   #12
horshack
Scooby Specialist
 
Member#: 19236
Join Date: May 2002
Vehicle:
Axis GT35/40R STi
Not back yet

Default

Well, trick or not, I mix 2.5 gallons of 109 Sunoco GT Plus race gas with the rest 91 Tractor Piss.

I drive every day, with traffic at 75-85mph to and from work. I have been tracking my milage since day one, after the CAI mod and after the TBE mod.

I am currently averaging about 21mpg, give or take a mile depending on conditions.
horshack is offline  
 

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
STi gas mileage.. Black-STi North West Impreza Club Forum -- NWIC 23 05-09-2006 01:25 AM
STi Gas Mileage? STiD Newbies & FAQs 16 10-14-2004 05:00 PM
STI Gas Mileage Deca Auto Factory 2.5L Turbo Powertrain 71 03-14-2004 09:22 AM


All times are GMT -4. The time now is 07:52 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.