Welcome to the North American Subaru Impreza Owners Club Tuesday July 29, 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 > Electrical & Lighting

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 02-05-2005, 07:52 PM   #1
culmination
Scooby Specialist
 
Member#: 57065
Join Date: Mar 2004
Location: 626 area
Vehicle:
2004 GT35R STi
PSM

Default a/f gauge

my autometer A/F gauge was taken out from my accord several years ago and it has been untouched since then... i decided to install this and did a little of bit of research and i found out the correct wire to tap is the rear oxygen sensor (b137 #25) from the ECU pinout. after i installed the gauge i decided to take my car out for a spin however when i started up my car the guage was showing "lean.." for crusing it was "stoich" and WOT was "rich" when im back to idle it goes back to "lean." should i be concerned that my idle is "lean?" also, the reading is not that fast, i would say that there is about 1~2 sec. delay.....im wondering rather or not

A. i didn't install it properly

B. the guage is broken

C. i installed everything correctly and the gauge is not broken... so .my car is lean at idle

one more thing... i installed my UTEC couple of days ago (untuned) with blitz SUS intake. i will get it tuned as soon as i install my APS 3" TBE.
thanks~
* Registered users of the site do not see these ads.
culmination is offline   Reply With Quote
Old 02-05-2005, 08:26 PM   #2
import111
Scooby Specialist
 
Member#: 24447
Join Date: Sep 2002
Chapter/Region: SWIC
Location: Tucson, Arizona
Vehicle:
2010 Evo GSR
GG

Default

I had an Autometer A/F gauge on my old 01 2.5RS-T and it had a 1-2 second delay also. I guess it is normal. I don't think it is hurting anything to run lean at idle. My old car ran lean at idle sometimes. I am not sure what STI's A/F's are suppose to be. I am pretty sure they are suppose to run a little rich on boost, but that is all I know.

Ryan
import111 is offline   Reply With Quote
Old 02-06-2005, 11:11 PM   #3
wrx05
Scooby Specialist
 
Member#: 69032
Join Date: Aug 2004
Location: Maine
Vehicle:
2005 Legacy GT
Obsidian Black

Default

would the intake have anything to do with the lean condition?
wrx05 is offline   Reply With Quote
Old 02-06-2005, 11:22 PM   #4
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

Installing an AF gauge to the stock o2 sensors(NOT wideband) is useless.

Just a pretty, flashy, blingy, gauge.
Uncle Scotty is offline   Reply With Quote
Old 02-06-2005, 11:23 PM   #5
afpdl
Scooby Guru
 
Member#: 26361
Join Date: Oct 2002
Chapter/Region: TXIC
Location: Sugar Land (Houston), Tx
Vehicle:
My shenanigans are
cheeky and fun

Default

An autometer a/f gauge is best left in the back of a closet somewhere. Its just not a very good gauge. It mostly just blinks differnt lights in correlation with the position of your left foot.
afpdl is offline   Reply With Quote
Old 02-06-2005, 11:24 PM   #6
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

Quote:
Originally Posted by afpdl
An autometer a/f gauge is best left in the back of a closet somewhere. Its just not a very good gauge. It mostly just blinks differnt lights in correlation with the position of your left foot.

.
Uncle Scotty is offline   Reply With Quote
Old 02-06-2005, 11:34 PM   #7
afpdl
Scooby Guru
 
Member#: 26361
Join Date: Oct 2002
Chapter/Region: TXIC
Location: Sugar Land (Houston), Tx
Vehicle:
My shenanigans are
cheeky and fun

Default

Ive been up for too long.

But the gauge still sucks.
afpdl is offline   Reply With Quote
Old 02-07-2005, 11:04 PM   #8
import111
Scooby Specialist
 
Member#: 24447
Join Date: Sep 2002
Chapter/Region: SWIC
Location: Tucson, Arizona
Vehicle:
2010 Evo GSR
GG

Default

Actually my Autometer A/F gauge helped me out quite a bit. It definatly let me know when my car was acting up and having problems. I agree that a wideband setup is more reliable. The regular A/F gauges still work though.

Ryan
import111 is offline   Reply With Quote
Old 02-07-2005, 11:14 PM   #9
veightkiller
Scooby Guru
 
Member#: 78967
Join Date: Jan 2005
Chapter/Region: VIC
Location: vancouver B.C
Vehicle:
2011 335i
Black

Default

it's still work but not that accurate though... wideband is the best way to go..

budget....budget....budget....<---------this will be the probelam then...
veightkiller is offline   Reply With Quote
Old 02-08-2005, 02:58 AM   #10
nhluhr
John Wayne Toilet Paper
Moderator
 
Member#: 7327
Join Date: Jun 2001
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2008 Mazdaspeed3
2006 Wrangler Sport

Default

Quote:
Originally Posted by import111
Actually my Autometer A/F gauge helped me out quite a bit. It definatly let me know when my car was acting up and having problems. I agree that a wideband setup is more reliable. The regular A/F gauges still work though.

Ryan
no it really doesn't tell you ****. There is absolutely no useful information, either from a tuning standpoint, or a "is my car running okay" standpoint that can be had from a narrowband O2 sensor. it's not a matter of wideband being more accurate or more reliable - it's a matter of the wideband showing the information that you need and a narrowband NOT showing that information.

A narrowband (like the autometer) only has a useful range from just barely lean to just barely rich. To accurately judge if you car is running well or even to tune, you need RESOLUTION in the 10-12 range and the narrowband doesn't read in that range at all.

Then there's the issue of the narrowband being installed on a sensor that is downstream of two cats which further negates any usefulness.

If you are watching an autometer air/fuel gauge and you feel like it's giving you useful information, it is quite simply a false sense of security and in reality you have no clue whatsoever what is going on.

Uncle Scotty has it right when he says it's "Just a pretty, flashy, blingy, gauge." It has absolutely no practical purpose, tells you absolutely no useful information, and has no place in a WRX or any other turbo car with modern electronic fuel injection.
nhluhr is offline   Reply With Quote
Old 02-08-2005, 10:50 AM   #11
afpdl
Scooby Guru
 
Member#: 26361
Join Date: Oct 2002
Chapter/Region: TXIC
Location: Sugar Land (Houston), Tx
Vehicle:
My shenanigans are
cheeky and fun

Default

It may be able to tell you if your rear cat has dissapeared though.
afpdl is offline   Reply With Quote
Old 02-08-2005, 11:55 AM   #12
nhluhr
John Wayne Toilet Paper
Moderator
 
Member#: 7327
Join Date: Jun 2001
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2008 Mazdaspeed3
2006 Wrangler Sport

Default

Quote:
Originally Posted by afpdl
It may be able to tell you if your rear cat has dissapeared though.
nhluhr is offline   Reply With Quote
Old 02-08-2005, 08:56 PM   #13
import111
Scooby Specialist
 
Member#: 24447
Join Date: Sep 2002
Chapter/Region: SWIC
Location: Tucson, Arizona
Vehicle:
2010 Evo GSR
GG

Default

If the Autometer A/F gauge is useless then why when my car went so lean that it bucked me forward did the A/F gauge show a lean spike every time that happened. Seems to me it worked just fine. And when my car ran good, the A/F gauge showed 1-2 bars into the rich. When my car didn't feel as fast the A/F gauge would show way lean under boost.

Ryan
import111 is offline   Reply With Quote
Old 02-08-2005, 10:49 PM   #14
nhluhr
John Wayne Toilet Paper
Moderator
 
Member#: 7327
Join Date: Jun 2001
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2008 Mazdaspeed3
2006 Wrangler Sport

Default

if your car is running "good" it should be PEGGED into the rich, not just 1-2 bars.
nhluhr is offline   Reply With Quote
Old 02-09-2005, 12:13 AM   #15
import111
Scooby Specialist
 
Member#: 24447
Join Date: Sep 2002
Chapter/Region: SWIC
Location: Tucson, Arizona
Vehicle:
2010 Evo GSR
GG

Default

Quote:
Originally Posted by nhluhr
if your car is running "good" it should be PEGGED into the rich, not just 1-2 bars.
pffffff, it is not good to run too rich. It will keep the EGT's low sure, but kill power running overly rich. The car was a 01 2.5RS w/ a stg 3 turbo kit. 2 bars into the rich was rich enough to keep detonation away and make good power. Even when it ran stoich at WOT on full boost it never detonated or anything. Pegged rich is not running good.

Ryan
import111 is offline   Reply With Quote
Old 02-09-2005, 03:38 AM   #16
nhluhr
John Wayne Toilet Paper
Moderator
 
Member#: 7327
Join Date: Jun 2001
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2008 Mazdaspeed3
2006 Wrangler Sport

Default

thing is, the autometer gauge only reads down to about 12.5:1 at the richest end of its scale... for it to not be all the way there indicates that your tune is nowhere near "good"

I do know a thing or two about engine tuning. After all, I keep a Wideband kit in my car 100% of the time, i've had UTECs, etc...
nhluhr 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
FS : 2005 Stock exhaust, shift knob SUPER CHEAP infinite012 MAIC Private Classifieds 26 07-09-2010 08:21 AM
52mm STRI gauges- price drop TheNailman NESIC Private Classifieds 82 06-24-2010 06:00 AM
52mm STRI gauges- Price Drop TheNailman Exterior/Styling 111 06-24-2010 05:58 AM
FS : Meth / water injection kit NEW! defi gauges boost, egt JT's06sti Engine/Power/Exhaust 7 06-17-2010 11:45 PM
Gauges, gauges and more gauges arrghh! trustWRX Newbies & FAQs 2 08-25-2003 12:43 PM


All times are GMT -4. The time now is 11:32 PM.


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.