follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Delicious Tuning
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > Technical Topics > Software Tuning

Software Tuning Discuss all software tuning topics.


User Tag List

Reply
 
Thread Tools Search this Thread
Old 09-25-2022, 05:35 PM   #1
yzf219
Member
 
Join Date: Sep 2020
Drives: 2013 FRS GTX3076R
Location: Canada
Posts: 79
Thanks: 54
Thanked 18 Times in 16 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Wideband afr gauge

Is it possible to tap into the factory wideband oxygen sensor and connect a physical gauge to view afrs? I know you can see the afrs via obd but I'd like a physical gauge.

Thanks.

Sent from my SM-G991W using Tapatalk
yzf219 is offline   Reply With Quote
Old 09-25-2022, 09:58 PM   #2
tomm.brz
Senior Member
 
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,183
Thanks: 499
Thanked 1,059 Times in 769 Posts
Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
the factory primary sensor is mandatory, so if you want a new wideband sensor you will connect it instead of the second factory almabda that you can remove and disable on tune
tomm.brz is offline   Reply With Quote
Old 09-26-2022, 11:16 AM   #3
yzf219
Member
 
Join Date: Sep 2020
Drives: 2013 FRS GTX3076R
Location: Canada
Posts: 79
Thanks: 54
Thanked 18 Times in 16 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by tomm.brz View Post
the factory primary sensor is mandatory, so if you want a new wideband sensor you will connect it instead of the second factory almabda that you can remove and disable on tune
Thanks for your response. I'm wondering if there is a way to continue using the factory wideband but just wire in a display for it so I can see the afrs.

Sent from my SM-G991W using Tapatalk
yzf219 is offline   Reply With Quote
Old 09-26-2022, 04:00 PM   #4
tomm.brz
Senior Member
 
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,183
Thanks: 499
Thanked 1,059 Times in 769 Posts
Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
i have the AEM wideband sensor kit, you plug the sensor in the place of the second oem a/f sensor, you disable it in the tune and the relative corrections (A/F#3 corrections in the tune) and i put his gauge inside the left air vent inside the cabin, so you can see the real AFR all the time

An extra step would be connect the output wire from the gauge to an input into the ecu (for example the black socket on which the second a/f sensor was connected to) so you can rescale the oem primary sensor to the new wideband sensor, so the AFRs match, both in the tune and in your gauge

AEM Wideband + Gauge kit
tomm.brz is offline   Reply With Quote
The Following User Says Thank You to tomm.brz For This Useful Post:
yzf219 (10-04-2022)
Old 09-26-2022, 06:24 PM   #5
Wally86
Be Kind
 
Wally86's Avatar
 
Join Date: Apr 2020
Drives: 2020 86
Location: MD
Posts: 1,073
Thanks: 5,131
Thanked 1,249 Times in 602 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by yzf219 View Post
Is it possible to tap into the factory wideband oxygen sensor and connect a physical gauge to view afrs? I know you can see the afrs via obd but I'd like a physical gauge.

Thanks.

Sent from my SM-G991W using Tapatalk

Like this?



https://www.p3cars.com/subaru/p3-v3-...uge-2012-2020/
__________________
[Insert clever signature here]
IG | WhiskyBlog | Photography
Wally86 is offline   Reply With Quote
The Following User Says Thank You to Wally86 For This Useful Post:
yzf219 (10-04-2022)
Old 10-04-2022, 08:48 AM   #6
yzf219
Member
 
Join Date: Sep 2020
Drives: 2013 FRS GTX3076R
Location: Canada
Posts: 79
Thanks: 54
Thanked 18 Times in 16 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Wally86 View Post
Similar, this one still uses obd. I'm looking for one where I can read directly from the sensor itself. Not sure if it's possible. Thanks.

Sent from my SM-G991W using Tapatalk
yzf219 is offline   Reply With Quote
The Following User Says Thank You to yzf219 For This Useful Post:
Wally86 (10-05-2022)
Old 10-04-2022, 01:48 PM   #7
tomm.brz
Senior Member
 
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,183
Thanks: 499
Thanked 1,059 Times in 769 Posts
Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
Not unless you add a second wideband as I told you before
Or just take it from obd like others said, primary lambda is just a passive sensor, so you would need a special calibrated driver just to be able to have the reading from it available for a gauge
Instead, the ecu drives the primary lambda, so what you get from obd is reliable and you could use an obd gauge

but if you want a gauge separated from the ecu then you only can add a wideband kit as the one from AEM I linked to you
tomm.brz is offline   Reply With Quote
Old 10-04-2022, 05:16 PM   #8
AussieBRZ
Senior Member
 
AussieBRZ's Avatar
 
Join Date: Aug 2022
Drives: WRB BRZ
Location: Australia
Posts: 112
Thanks: 14
Thanked 51 Times in 36 Posts
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by yzf219 View Post
Similar, this one still uses obd. I'm looking for one where I can read directly from the sensor itself. Not sure if it's possible. Thanks.

Sent from my SM-G991W using Tapatalk



Physically connecting to the stock AFR sensor to run a physical afr giage is likely to cause issues as the second connection is likely to cause voltage or current changes and effect the readings from the stock afr sensor which is used by ecu.


Also the guage you connect would need to be mapped to the stock afr sensor calibration curve so it reads correctly.


You moght as well just ise the OBD reading of AFR provided by the ECU to monitor afr if your using stock afr wideband. You will need to ensure the stock afr wideband has been recalibrated in tune to read lower than 12.17 afr which is stock calibration limit, this sensor can read down to about 10 afr reliably if recalibrated in tune.


Once the stock sensor is recalibrated in tune that wideband signal can then be used by ecu for fuel correction and reading all the time using ecutek closed loop fuel control



Then its just a matter of using someting like torque app or the ecutek blutooth app or a P3 cars guage or luffi guage https://m.facebook.com/lufi.au/ to display the afr reading from the stock afr sensor
AussieBRZ is offline   Reply With Quote
The Following 2 Users Say Thank You to AussieBRZ For This Useful Post:
Wally86 (04-05-2023), yzf219 (03-31-2023)
Old 03-31-2023, 11:52 PM   #9
yzf219
Member
 
Join Date: Sep 2020
Drives: 2013 FRS GTX3076R
Location: Canada
Posts: 79
Thanks: 54
Thanked 18 Times in 16 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Thanks for your response! I'm currently using the rescaled stock o2 sensor, used it to tune my turbo kit, runs great.

Quote:
Originally Posted by AussieBRZ View Post
Physically connecting to the stock AFR sensor to run a physical afr giage is likely to cause issues as the second connection is likely to cause voltage or current changes and effect the readings from the stock afr sensor which is used by ecu.


Also the guage you connect would need to be mapped to the stock afr sensor calibration curve so it reads correctly.


You moght as well just ise the OBD reading of AFR provided by the ECU to monitor afr if your using stock afr wideband. You will need to ensure the stock afr wideband has been recalibrated in tune to read lower than 12.17 afr which is stock calibration limit, this sensor can read down to about 10 afr reliably if recalibrated in tune.


Once the stock sensor is recalibrated in tune that wideband signal can then be used by ecu for fuel correction and reading all the time using ecutek closed loop fuel control



Then its just a matter of using someting like torque app or the ecutek blutooth app or a P3 cars guage or luffi guage https://m.facebook.com/lufi.au/ to display the afr reading from the stock afr sensor
yzf219 is offline   Reply With Quote
The Following User Says Thank You to yzf219 For This Useful Post:
AussieBRZ (04-02-2023)
 
Reply

Thread Tools Search this Thread
Search this Thread:

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
AEM Wideband Failsafe Gauge Pitman Forced Induction 51 08-14-2016 11:06 AM
P3 gauge/wideband integration?? xDanger_208x Forced Induction 8 12-27-2014 10:00 AM
WTB: wideband sensor/gauge SterlingBrz Want-To-Buy Requests 0 09-13-2014 11:54 AM
Innovate lc-1 wideband with gauge spitfire481 Engine, Exhaust, Bolt-Ons 1 02-26-2014 01:25 PM
AEM Failsafe wideband gauge. skatery1989 Interior Parts (Incl. Lighting) 2 04-14-2013 09:12 AM


All times are GMT -4. The time now is 12:39 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.