Wideband bung location - CorvetteForum - Chevrolet Corvette Forum Discussion


C5 Scan & Tune
Corvette Onboard Diagnostics, Service Advice, Dyno Tuning, Fuel Management, Tuning Software, LS1 Edit, AutoTap, Diablo

Wideband bung location

Reply
 
 
 
Thread Tools Search this Thread
Old 01-31-2017, 02:50 AM   #1
Pizzano
CF Senior Member
Thread Starter
 
Pizzano's Avatar
 
Member Since: Oct 2005
Location: Henderson NV
Posts: 1,910
Thanks: 0
Thanked 11 Times in 11 Posts
Default Wideband bung location

Hello folks , on my 98 I have Kooks headers with Kooks catted Xpipe, I noticed there is a plugged bung right before the passenger side cat
(picture attached)

question is is that location ok for installation of the O2 wideband sensor or is it to close to the cat, I know is suppose to be before the cat , which it is , but awfully close.

thanks for your time.


Last edited by Pizzano; 01-31-2017 at 02:51 AM.
Pizzano is offline   Reply With Quote
Old 02-01-2017, 03:59 AM   #2
RedRiderZR1
CF Senior Member
 
RedRiderZR1's Avatar
 
Member Since: Oct 2002
Location: SoCal
Posts: 1,545
Thanks: 0
Thanked 8 Times in 8 Posts
Default

Quote:
Originally Posted by Pizzano View Post
Hello folks , on my 98 I have Kooks headers with Kooks catted Xpipe, I noticed there is a plugged bung right before the passenger side cat
(picture attached)

question is is that location ok for installation of the O2 wideband sensor or is it to close to the cat, I know is suppose to be before the cat , which it is , but awfully close.

thanks for your time.

Not an issue. Perfectly fine right there. Issue you are going to have is it being farther downstream than normal. Headers moving the Wideband down stream. As far as close, try putting a wideband sensor after the manifolds and before the cat on LS7 manifolds.. that is close. That's my setup, and no issues there at all.
RedRiderZR1 is offline   Reply With Quote
Old 02-01-2017, 10:01 PM   #3
Pizzano
CF Senior Member
Thread Starter
 
Pizzano's Avatar
 
Member Since: Oct 2005
Location: Henderson NV
Posts: 1,910
Thanks: 0
Thanked 11 Times in 11 Posts
Default

Quote:
Originally Posted by RedRiderZR1 View Post
Not an issue. Perfectly fine right there. Issue you are going to have is it being farther downstream than normal. Headers moving the Wideband down stream. As far as close, try putting a wideband sensor after the manifolds and before the cat on LS7 manifolds.. that is close. That's my setup, and no issues there at all.
Im running Kooks headers also and the bungs on the headers have the factory O2 sensors there , which is recomended.

Also Kooks tech rep just replied to my email and said them bungs were specifically installed where they are on the x pipe for wideband sensors,

(which I did not have that info when i posted this post originally!~!

Thanks to all

Last edited by Pizzano; 02-01-2017 at 10:04 PM.
Pizzano is offline   Reply With Quote
Old 02-17-2017, 01:16 AM   #4
tblu92
CF Senior Member
St. Jude Donor '13-'14-'15
 
tblu92's Avatar
 
Member Since: Aug 2005
Posts: 4,278
Thanks: 0
Thanked 104 Times in 95 Posts
Default

As long as the wideband bung is PRE CAT you will get a very accurate reading---
They recommend however if you leave the wideband installed permanently it should be mounted above the 9 and 3 o'clock positions---as if it were installed lower when the engine is off and re started moisture often gathers in the lower positions which tends to foul the wide band 02 If you are only using the wideband for tuning it won't matter as moisture won't ever have time to accumulate
tblu92 is offline   Reply With Quote
Old 02-17-2017, 12:24 PM   #5
NormK
Junior Member
 
Member Since: Jan 2017
Location: Golden CO
Posts: 48
Thanked 3 Times in 3 Posts
Default

Am I misguided in being concerned that reading AFRs from only one bank might give a false sense of security by showing perfect (or at least acceptable) AFRs from the side being read, while at the same time a faulty injector is causing a dangerously lean condition on the other?

_
NormK is offline   Reply With Quote
Old 02-17-2017, 03:09 PM   #6
RedRiderZR1
CF Senior Member
 
RedRiderZR1's Avatar
 
Member Since: Oct 2002
Location: SoCal
Posts: 1,545
Thanks: 0
Thanked 8 Times in 8 Posts
Default

Quote:
Originally Posted by NormK View Post
Am I misguided in being concerned that reading AFRs from only one bank might give a false sense of security by showing perfect (or at least acceptable) AFRs from the side being read, while at the same time a faulty injector is causing a dangerously lean condition on the other?

_
That would show up in the narrowband O2 sensor on the other side.
RedRiderZR1 is offline   Reply With Quote
Old 02-20-2017, 11:10 PM   #7
Doug Doty
Junior Member
 
Member Since: Oct 2014
Posts: 25
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by NormK View Post
Am I misguided in being concerned that reading AFRs from only one bank might give a false sense of security by showing perfect (or at least acceptable) AFRs from the side being read, while at the same time a faulty injector is causing a dangerously lean condition on the other?

_
That is kind of your choice if you want to worry at that level, single wbo2 assumes all fuel is flowing and balanced on all 8 cylinders and you are sampling an average of 4. If you want ultimate safety you need 8 of them, 4 only averages one bank, one bad injector could still lean out a cylinder on either side !! On my last race car and ran wbo2 on each collector and also had a bung in each tube for random fine tuning of the carb. and understanding the richest and leanest cylinder differentials.
Doug Doty is offline   Reply With Quote
Old 02-20-2017, 11:52 PM   #8
aaronc7
CF Senior Member
 
aaronc7's Avatar
 
Member Since: Nov 2013
Location: Navarre FL
Posts: 760
Thanked 27 Times in 26 Posts
Default

Quote:
Originally Posted by RedRiderZR1 View Post
That would show up in the narrowband O2 sensor on the other side.
to further clarify some of the remarks here... take a look at your long term fuel trims and make sure bank 1 and 2 are pretty close. If one is way out then something is up. faulty injector, one side running rich or lean.... or maybe just a bad narrowband sensor. Once you confirm everything is working well, then I would just proceed with the tune as normal. I always tune AFR a little on the safe side anyways, so I'm not too worried about one side running a little leaner.
aaronc7 is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • Wideband bung location
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    Wideband bung location Pizzano C5 Forced Induction/Nitrous 5 02-07-2017 02:27 AM
    idle vacuum reading on Boost gauge Pizzano C5 Forced Induction/Nitrous 4 01-30-2017 12:36 AM
    FS Bose Deck and Speakers 86 Coupe smdorsey C4 Parts for Sale/Wanted 3 05-14-2012 10:30 PM
    Finally some new Photos Pizzano C5 General 31 08-20-2007 12:14 PM
    Kooks Custom Headers @ SDPC bg-sdpc C5 Tech 2 06-20-2006 04:12 PM


    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    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
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump


    All times are GMT -4. The time now is 11:48 PM.


     
    • Ask a Question
      Get answers from community experts
    What's your question?
    Send