Welcome to the North American Subaru Impreza Owners Club Wednesday September 3, 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 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 05-11-2009, 12:39 AM   #1
97 Pimpreza
Scooby Specialist
 
Member#: 123693
Join Date: Aug 2006
Chapter/Region: NESIC
Location: charlton, ma
Vehicle:
2004 Impreza WRX
Red

Default Do I need engine management?

Ok, so I just purchased a 96 impreza the other day which has a bunch of work done to it and I am having a very problem with the idle. It idles very rough and if I put it into neutral it stalls almost instantly. The car has a lightweight pulley and flywheel, a unknown brand cat back custom headers and a few other power modifications so I believe the cause for the stalling and rough idle is a lack of engine management causing the air/fuel ratio to be off. Do you think I just need engine management?

Thanks,
Luke
* Registered users of the site do not see these ads.
97 Pimpreza is online now   Reply With Quote
Old 05-11-2009, 02:27 AM   #2
williaty
Scooby Guru
 
Member#: 71092
Join Date: Sep 2004
Chapter/Region: MWSOC
Location: Delaware County, Ohio
Vehicle:
2005 2.5RS Wagon
Regal Blue Pearl

Default

No.

45
williaty is offline   Reply With Quote
Old 05-11-2009, 03:10 AM   #3
3barboost
Scooby Newbie
 
Member#: 73609
Join Date: Nov 2004
Chapter/Region: International
Location: Johannesburg South Africa
Vehicle:
2002 wrx
White

Default

just lift the idle speed at the throttle butterfly with the little screw and nut combo - one or two turns will be all that you need

why overcomplicate things ?
3barboost is offline   Reply With Quote
Old 05-11-2009, 08:11 PM   #4
Blase
Scooby Newbie
 
Member#: 54702
Join Date: Feb 2004
Chapter/Region: MWSOC
Location: Chicago area
Vehicle:
2000 impreza 2.5rs
brp

Default

check for vaccum leaks and/or loose sensors.
Blase is offline   Reply With Quote
Old 05-12-2009, 02:20 PM   #5
WcW
Scooby Newbie
 
Member#: 209963
Join Date: Apr 2009
Default

If he has a poor idle and a functioning IAC he needs to solve the problem, not mess up the TB calibration. Subbies use a fully closed TB with near 0 flow so the IAC is designed to do all the metering. If you have a poor idle you need a tuneup. Going to an aftermarket controller to fix a leak or a bad sensor is dumb. Even if you can fix the problem with a mapping tweak the real issue still exists and is going to need fixing. Never put an aftermarket ECU on a poorly running car unless you know why it is running poorly (you changed something) you will waste time and money and tuning will be a huge hassle. Get it right then hot it up.
WcW 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
Do I need engine management? VtecThisWRX Factory 2.0L Turbo Powertrain 6 01-05-2004 05:36 PM
do i need Engine Management black Engine Management & Tuning 3 12-07-2002 10:23 AM
do i need Engine Management ? black Factory 2.0L Turbo Powertrain 0 12-05-2002 03:23 AM
Turboback, Uppipe, ITG Filter, Switchable MBC... Do I need engine management? treybomb Factory 2.0L Turbo Powertrain 1 11-14-2002 03:54 AM
When do I NEED engine management? Corn-Picker Factory 2.0L Turbo Powertrain 7 03-18-2002 09:58 AM


All times are GMT -4. The time now is 12:46 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.