Subaru Legacy Forum Index Subaru Legacy Forum Index
 
Home - Vendors - Rules - Forums - Reviews - vBGarage - Join this forum! - Get Todays Posts - Wiki - Members - VB FAQ - Search
img img img
 
Go Back   Subaru Legacy Forums > Technical Forums > Tuning
Reload this Page Tapping into front O2 sensor
User Name
Password

Reply
 
Thread Tools Search this Thread Display Modes
#1: 04-24-2013, 08:58 AM
Tapping into front O2 sensor
 
 MasAyinde
MasAyinde's Avatar
Title: Resident Paella Fiend
Location: Illadel, PA
Car: 2007 DGM LGT "stock as shit"
Posts: 3,588
iTrader: (10)
Send a private message to MasAyinde Find all posts by MasAyinde Reply With Quote
Since the front O2 sensor is a wideband, can, those wires be tapped to use as a wideband O2 sensor as long as you have the wiring to connect straight to your laptop/gauge? I was tossing this idea around in my head as something I might try next month but wanted to see if anyone had any glaring reasons that it wouldn't work.
__________________
Get your vacuum/boost leak testers here:
http://legacygt.com/forums/showthrea...er-188394.html
Remove advertisements
Sponsored links
MasAyinde
View Public Profile
Send a private message to MasAyinde
Find More Posts by MasAyinde
iTrader: (10)
#2: 04-24-2013, 09:18 AM
 
 Spec B
Spec B's Avatar
Title: JDM tuner wanna be
Rank: Donating Member
Location: Central NJ
Car: Spec B- FP HTA68'd up E-Ocho Cinco Stilo
Posts: 5,460
iTrader: (44)
Send a private message to Spec B Find all posts by Spec B Reply With Quote
The stock O2 in the stock location provides useless readings under boost. It only really works if you relocate the sensor to somewhere post turbo. Not sure if you can tap into it but you could monitor it via romraider of cobb AP II.
Spec B
View Public Profile
Send a private message to Spec B
Find More Posts by Spec B
iTrader: (44)
#3: 04-24-2013, 09:19 AM
 
 MasAyinde
MasAyinde's Avatar
Title: Resident Paella Fiend
Location: Illadel, PA
Car: 2007 DGM LGT "stock as shit"
Posts: 3,588
iTrader: (10)
Send a private message to MasAyinde Find all posts by MasAyinde Reply With Quote
For some reason that basic concept slipped my mind when i was thinking about this.
__________________
Get your vacuum/boost leak testers here:
http://legacygt.com/forums/showthrea...er-188394.html
MasAyinde
View Public Profile
Send a private message to MasAyinde
Find More Posts by MasAyinde
iTrader: (10)
#4: 04-24-2013, 09:23 AM
 
 Spec B
Spec B's Avatar
Title: JDM tuner wanna be
Rank: Donating Member
Location: Central NJ
Car: Spec B- FP HTA68'd up E-Ocho Cinco Stilo
Posts: 5,460
iTrader: (44)
Send a private message to Spec B Find all posts by Spec B Reply With Quote
I think NSFW has his stock sensor relocated to a bung on the DP..he monitors it via laptop. I think he also has a dedicated WB02 mounted right next to the stock one (on the DP). From what I recall - the stock O2 is almost as useful as a WB02 when mounted there.
Spec B
View Public Profile
Send a private message to Spec B
Find More Posts by Spec B
iTrader: (44)
#5: 04-24-2013, 09:27 AM
 
 MasAyinde
MasAyinde's Avatar
Title: Resident Paella Fiend
Location: Illadel, PA
Car: 2007 DGM LGT "stock as shit"
Posts: 3,588
iTrader: (10)
Send a private message to MasAyinde Find all posts by MasAyinde Reply With Quote
Well the stock one is used for fueling adjustments, which is why it needs to be as close as possible to where all 4 exhaust ports meet, right? I don't know how much of a difference relocating it to the DP bellmouth would make in terms of fueling responsiveness, but tapping into it there would allow you to use it for fueling changes and in place of an aftermarket wideband. Unless there is an issue with a wideband pulling double duty.
__________________
Get your vacuum/boost leak testers here:
http://legacygt.com/forums/showthrea...er-188394.html
MasAyinde
View Public Profile
Send a private message to MasAyinde
Find More Posts by MasAyinde
iTrader: (10)
#6: 04-24-2013, 09:34 AM
 
 Spec B
Spec B's Avatar
Title: JDM tuner wanna be
Rank: Donating Member
Location: Central NJ
Car: Spec B- FP HTA68'd up E-Ocho Cinco Stilo
Posts: 5,460
iTrader: (44)
Send a private message to Spec B Find all posts by Spec B Reply With Quote
I don't think the latency would be a big issue when adjusting fuel trims - but not sure. I would opt to just log it (instead of tapping into it). It should work.

I think the stock O2 is capped on how rich it will read, around 12ish AFR. Anything richer will not show up...not sure you could use it to tune high end WOT.
Spec B
View Public Profile
Send a private message to Spec B
Find More Posts by Spec B
iTrader: (44)
#7: 04-24-2013, 09:36 AM
 
 MasAyinde
MasAyinde's Avatar
Title: Resident Paella Fiend
Location: Illadel, PA
Car: 2007 DGM LGT "stock as shit"
Posts: 3,588
iTrader: (10)
Send a private message to MasAyinde Find all posts by MasAyinde Reply With Quote
I thought that the sensor would give much richer readings than that but the ECU wouldn't interpret it, but that you could bypass that by tapping into the wires.
__________________
Get your vacuum/boost leak testers here:
http://legacygt.com/forums/showthrea...er-188394.html
Remove advertisements
Sponsored links
MasAyinde
View Public Profile
Send a private message to MasAyinde
Find More Posts by MasAyinde
iTrader: (10)
#8: 04-24-2013, 09:37 AM
 
 Spec B
Spec B's Avatar
Title: JDM tuner wanna be
Rank: Donating Member
Location: Central NJ
Car: Spec B- FP HTA68'd up E-Ocho Cinco Stilo
Posts: 5,460
iTrader: (44)
Send a private message to Spec B Find all posts by Spec B Reply With Quote
hmmm..I dunno. Try it.
Spec B
View Public Profile
Send a private message to Spec B
Find More Posts by Spec B
iTrader: (44)
#9: 04-24-2013, 09:41 AM
 
 SpecBlitzed
SpecBlitzed's Avatar
Title: Junior Member
Location: Corn Fields
Car: Honda Ruckus
Posts: 62
iTrader: (1)
Send a private message to SpecBlitzed Find all posts by SpecBlitzed Reply With Quote
I have tried something similar to this. I have a Autometer Wideband that has an output signal. I wired a narrow band Gauge into the signal and it gave me a reading. It read the same as my wideband but was much more responsive and undelayed.
SpecBlitzed
View Public Profile
Send a private message to SpecBlitzed
Find More Posts by SpecBlitzed
iTrader: (1)
Reply

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode
Hybrid Mode Switch to Hybrid Mode
Threaded Mode Switch to Threaded Mode

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 Rules
Forum Jump

Remove advertisements

All times are GMT -6. The time now is 01:14 PM.

 
img img img
LegacyGT.com - Archive - Top
Back To The Top   img img Back To The Top
Zoints SEO v2.3.0 by Zoints & Computer-Logic.org

vBulletin Optimisation by vB Optimise.