Welcome to the North American Subaru Impreza Owners Club Tuesday July 22, 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 > 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.
Reply
 
Thread Tools Display Modes
Old 02-28-2004, 02:30 PM   #1
Patrick Olsen
NASIOC Supporter
 
Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default Replacing stock NB02 with a WB02?

One of these days I'm hoping to figure out why my car pulls timing in seemingly random fashion in the midrange. I'm thinking of acquiring a WBO2 sensor so that I can see what the car is really doing. As I've been researching a bit in the last couple days I discovered that some of the kits (Techedge, LM1, TXS) offer the ability to output a 0-1V signal to feed the stock ECU so you could ditch the stock NBO2 sensor.

So, that raises a couple of questions. First, reading on I think the Techedge website I got the impression that the lean/rich breakpoint may not be the same on every car. Is that the case, or is there a standard breakpoint (say, 0.8V, or something like that)? If there is not a standard breakpoint, then what is it for Subaru? Obviously it would be a bad thing to replace the stock NBO2 signal with one that was didn't match up right.

Second, one thing I hadn't even thought of was brought up in this thread: http://forums.nasioc.com/forums/show...hreadid=427972 - what do you do about the stock O2 sensor's heating circuit? Does the ECU need to think that the heater circuit is operating properly? Or can you just ditch the heater circuit wiring without causing any problems? I'd be worried that the ECU might think the O2 sensor isn't heating up properly, and hence might somehow adjust the signal it is receiving.

Pat Olsen
'97 Legacy 2.5GT sedan
* Registered users of the site do not see these ads.
Patrick Olsen is offline   Reply With Quote
Old 03-02-2004, 06:22 PM   #2
03WRXMA
Scooby Guru
 
Member#: 35081
Join Date: Apr 2003
Chapter/Region: NESIC
Location: CT
Vehicle:
2012 WRX
WRB

Default

Seems like a good idea, im not sure why this isnt a popular thread.

Clark would know more about wether the LM-1 could take the place of the OEM NB O2.
03WRXMA is offline   Reply With Quote
Old 03-04-2004, 12:37 PM   #3
Patrick Olsen
NASIOC Supporter
 
Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

Anyone? Bueller?... Or does everyone just ignore the features that these new WBO2s have and weld in an extra bung for their WBO2?

Pat
Patrick Olsen is offline   Reply With Quote
Old 03-04-2004, 01:39 PM   #4
rob
n00b Moderator
Moderator
 
Member#: 811
Join Date: Jan 2000
Location: WA
Vehicle:
2000 RS-Ej20G
It tastes like burning

Default

Patrick,

Is there a error code relating to the heater circuit? From my toyota experience, there is a specific fault code for an open or closed heater circuit. I would guess subaru has the same.

Best bet would be to keep the stock sensor heater connected but wrap the heater tip in tin foil or something and zip tie it securely somewhere under the car. You could even enclose it in an Al box. Or, add an extra bung for the WB and leave the NB in the exhaust flow with just the heater wires connected.

-Rob
rob is offline   Reply With Quote
Old 01-29-2005, 04:25 PM   #5
AaronWRX
Scooby Specialist
 
Member#: 7194
Join Date: Jun 2001
Chapter/Region: MAIC
Location: NoVa
Vehicle:
2011 997.2 Turbo
Black

Default

bump... im in a jam and would like to replave my nb02 with my bosch wb02 and still have my tuner pro work properly.
AaronWRX is offline   Reply With Quote
Old 01-30-2005, 06:41 AM   #6
Patrick Olsen
NASIOC Supporter
 
Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

In the end, although I haven't done anything yet, I decided that in my application it really wouldn't be that hard to add a second O2 bung. I have the MRT header...



...and the O2 sensor is in one branch of the Y (before it joins together to enter the cat). Whenever I finally get off my ass to buy a wideband setup , I'll just have the bung welded in to the other branch of Y.

Pat
Patrick Olsen 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
Replace stock Receiver with same plus FM reception SeaRex Car Audio, Video & Security 7 07-13-2003 10:51 PM
what to replace stock wing with? kimwk Interior & Exterior Modification 4 04-10-2003 02:02 AM
Anyone replace stock stereo with single din head unit and gauge pod? sdseagles Car Audio, Video & Security 7 06-23-2002 05:54 PM
('93-'01) WRX: replacing stock fogs with driving lights Snowphun Impreza Forum 2 10-23-2001 11:06 AM
Replacing stock cats with hi-flow cats Keiho Normally Aspirated Powertrain 2 01-04-2001 05:02 PM


All times are GMT -4. The time now is 05:36 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.