Welcome to the North American Subaru Impreza Owners Club Sunday March 29, 2015
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 Technical > Normally Aspirated Powertrain

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 02-26-2001, 12:23 AM   #1
ejicon
Scooby Guru
 
Member#: 2452
Join Date: Sep 2000
Chapter/Region: SCIC
Location: Burbank,California, USA
Vehicle:
08 2.5 WRX
WRB Mica

Angry Bad Fuel Mileage

O.k I've been getting Horribel fuel mileage on my Legacy Turbo. What should I do to correct this. i.e buy Fuel injection cleaner? Change Fuel Filter? What else? I use 89 grade fuel. Sometimes when I reve too hard, ya see the needle drop a little low. Sometimes it stays and sometimes it goes back up to where it was. PLEASE HELP. Thanx
* Registered users of the site do not see these ads.
ejicon is offline   Reply With Quote
Old 02-26-2001, 01:05 PM   #2
Jgrahn555
Scooby Newbie
 
Member#: 3224
Join Date: Dec 2000
Location: Seattle, FL
Vehicle:
06

Post

a) buy a new car. Legacy Turbos have always gotten bad gas milage.

B) change your filter.

c) put in better gas.

d) install new wiperblades.

e) different rubber compound in your tires.

f) install new plugs and wires

g) stay off the throttle so much

And lastly, your poor fuel milage might be due to the excessive wear on your head.

Jason

EDIT: Added a couple more possibilities

[This message has been edited by Jgrahn555 (edited February 26, 2001).]
Jgrahn555 is offline   Reply With Quote
Old 02-27-2001, 12:10 AM   #3
ejicon
Scooby Guru
 
Member#: 2452
Join Date: Sep 2000
Chapter/Region: SCIC
Location: Burbank,California, USA
Vehicle:
08 2.5 WRX
WRB Mica

Thumbs up

Hahaha, Thanks Jason, you're funny. This Legacy is just a project car. I'm still looking for a used RS to play with.
ejicon is offline   Reply With Quote
Old 02-27-2001, 12:37 AM   #4
ejicon
Scooby Guru
 
Member#: 2452
Join Date: Sep 2000
Chapter/Region: SCIC
Location: Burbank,California, USA
Vehicle:
08 2.5 WRX
WRB Mica

Unhappy

HeLp..PlEaSe!!!
ejicon is offline   Reply With Quote
Old 02-27-2001, 05:49 AM   #5
Shik
NASIOC Supporter
 
Member#: 132
Join Date: Jul 1999
Chapter/Region: Tri-State
Location: Central PA
Vehicle:
2006 GT Ltd 5spd sdn
2015 WRX 6spd CWP

Post

Change your O2 sensor(assuming all the tune-up items were done). Strictly hi-way , I used to get around 27mpg with my Legacy turbo with all the mods done to it. I don't think that's that bad. Don't remember what it got before the mods.

And no offense ejicon, but I would put a minimum of 92 octane fuel in a Turbo Chevy Sprint! May be in my head from the old days, but if it's turbocharged, it gets the good stuff. I ran Sunoco 94 the vast majority of the time. The few times I ran low on gas and put in some "convenient store" 92, within a few miles the car felt totally different, sluggish, throttle response seemed to go down, etc.

Maybe my car was just picky.

Shik is offline   Reply With Quote
Old 02-27-2001, 10:36 AM   #6
BrysImpreza
Scooby Guru
 
Member#: 3102
Join Date: Nov 2000
Chapter/Region: NESIC
Location: Northern, CT
Vehicle:
2012 Sport Limited
Ice Silver

Post

I had the same problem with my 1997 Impreza L. I changed everything from plugs, fuel filter on down to air filter. The only thing that has made any difference was putting on a www.kartboy.com MAF Filter mount and K&N Conefilter.
I'm not sure if you have the same set-up, but if the bolts going into the airbox are 5.1cm by 9.1cm, it'll work. It's simple to install and I went from 19-21 mpg to 26-28!!!

<IMG SRC="http://216.242.153.40/memberslist/userpics/2863/intake.jpg" border=0>

[This message has been edited by BrysImpreza (edited February 27, 2001).]
BrysImpreza is online now   Reply With Quote
Old 02-27-2001, 10:42 AM   #7
the spacecowboy
Scooby Newbie
 
Member#: 765
Join Date: Jan 2000
Location: westernport,md,usa
Post

wiperblades?
the spacecowboy is offline   Reply With Quote
Old 02-27-2001, 04:53 PM   #8
gavin
Scooby Specialist
 
Member#: 3198
Join Date: Dec 2000
Location: Portland, OR USA
Vehicle:
2005 GT LTD Wagon
Garnet Red

Post

Erm, Brys, you didn't gain 7MPG from the new intake. I guarantee it. Did you reset your ECU at the time you did the intake? That was likely what made the difference. If not, the new intake probably just forced the ECU to adjust on it's own.
gavin is offline   Reply With Quote
Old 02-27-2001, 06:15 PM   #9
Greborb
Scooby Newbie
 
Member#: 2974
Join Date: Nov 2000
Location: Portland, OR SPEC
Post

Another possibility is a bum fuel injector. Just had that problem with my RS with one spraying way too much fuel. Ended up saturating the cat.
Greborb is offline   Reply With Quote
Old 02-27-2001, 06:15 PM   #10
Greborb
Scooby Newbie
 
Member#: 2974
Join Date: Nov 2000
Location: Portland, OR SPEC
Post

Another possibility is a bum fuel injector. Just had that problem with my RS with one spraying way too much fuel. Ended up saturating the cat.
Greborb is offline   Reply With Quote
Old 02-27-2001, 07:07 PM   #11
Rez
Scooby Newbie
 
Member#: 1958
Join Date: Jul 2000
Location: Taxachusetts, USA
Vehicle:
1999 Impreza 2.5 RS
Rally Blue Pearl

Post

First and foremost, reset your ECU. Brought about 40 miles per tank for me.

-Rez
<IMG SRC="http://www.reverberations.com/Storage/Images/scrambles.gif" border=0>
Rez 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Bad Fuel Mileage? Subie Doobie Newbies & FAQs 291 07-20-2007 10:23 AM
Bad fuel mileage problem found fosheezy05 Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 5 03-02-2007 02:58 AM
Fuel mileage getting bad 02REX4LIFE South West Impreza Club Forum -- SWIC 11 02-08-2007 05:46 PM
Can a bad fuel filter cause bad mpg? abosworth Normally Aspirated Powertrain 11 10-06-2005 06:20 PM
Bad Fuel Mileage Jason Legacy Forum 7 03-05-2001 04:32 PM


All times are GMT -4. The time now is 07:06 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.