how-to: control closed loop AFR with your wideband O2 system
Dec 15, 2008 | 11:31 AM
#136
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From: Tri-Cities, WA // Portland, OR
This is most likely the case. Turbos glow red hot if you drive the car hard. O2 bung temperature is as important as EGT.
One of my Galants VR-4s has the wideband O2 in a stock O2 housing. My mother drives that car
The wideband O2 sensor has been happy for 4 years now and passed stringent California smog twice with flying colors while the Zt-2 is feeding the ECU with simulated NB O2 signal.
I would not place the wideband O2 sensor in a stock O2 location in any turbo cars driven as indented.
One of my Galants VR-4s has the wideband O2 in a stock O2 housing. My mother drives that car
The wideband O2 sensor has been happy for 4 years now and passed stringent California smog twice with flying colors while the Zt-2 is feeding the ECU with simulated NB O2 signal.I would not place the wideband O2 sensor in a stock O2 location in any turbo cars driven as indented.
Dec 15, 2008 | 11:35 AM
#137
I can send you a evoscan datalog file now - same one i sent mrfred if that would help at all?, or I can send u a ZDL log tomorrow.
Dec 15, 2008 | 11:37 AM
#138
I was going to place it right under the flange of the dp at 3 o'clock....this would be closer to the stock narrow band but still maintain some distance from the turbo. Even once everything is warm and driving the car I have a large swing back and forth of where my target afr is. It goes almost a point above and below where what my afr map is showing, moving the sensor closer should also help that I would think.
Wideband O2 needs to placed where it's cold.
I do not think EGTs will get hot enough before the wideband O2 controller heats up the ceramic. You are not going to go ape WOT on a frozen engine.
Dec 15, 2008 | 11:41 AM
#139
I use the wideband to control my car for everyday driving.......the narrow band is not operational when I have this patch working.
Dec 15, 2008 | 11:41 AM
#140
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I will get that for you tomorrow morning, this morning it was 55 degrees and the car started and didn't have the lean issues causing it to want to stall for the first few minutes of idling. Tomorrow is to be 30 degrees so I will certainly have the issue tomorrow......def. cold related from how it worked this morning.
I can send you a evoscan datalog file now - same one i sent mrfred if that would help at all?, or I can send u a ZDL log tomorrow.
I can send you a evoscan datalog file now - same one i sent mrfred if that would help at all?, or I can send u a ZDL log tomorrow.
Dec 15, 2008 | 11:44 AM
#142
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From: Tri-Cities, WA // Portland, OR
You may be right. The fact that the ZT2 and LC-1 go bad as soon as the car gets rolling and blows a higher volume of exhaust gas over the sensor suggests that the exhaust gas is still very cold.
Dec 15, 2008 | 11:50 AM
#143
Dec 15, 2008 | 11:51 AM
#144
Also, if you could delay using direct O2 feedback till coolant temp goes up. Kind of like a stock O2.
To be continued. We JUST came back from PRI show in Orlando FL. I need a little time to pick up pieces here.
See you guys later!
Z
Dec 15, 2008 | 12:00 PM
#145
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From: Tri-Cities, WA // Portland, OR
A quick fix would be to move the tip of the sensor a little away from the direct exhaust flow using a spark plug extender.
Also, if you could delay using direct O2 feedback till coolant temp goes up. Kind of like a stock O2.
To be continued. We JUST came back from PRI show in Orlando FL. I need a little time to pick up pieces here.
See you guys later!
Z
Also, if you could delay using direct O2 feedback till coolant temp goes up. Kind of like a stock O2.
To be continued. We JUST came back from PRI show in Orlando FL. I need a little time to pick up pieces here.
See you guys later!
Z
Jan 19, 2009 | 12:09 PM
#146
FYI I got a P0133 Oxygen Sensor Circuit Slow Response this weekend after a long drive through traffic. I'm guessing it was just because of alot of idling pace, but just thought I'd bring it up
Feb 20, 2009 | 11:05 AM
#147
Has there been a release for 94170015 on this rom mod ? Im looking to add this along with the mat logging to my rom. This way I will be all set up for speed density when the time comes.
Is there something I can do myself to port it over ? Im not sure where I would start.
Is there something I can do myself to port it over ? Im not sure where I would start.
Apr 4, 2009 | 11:43 PM
#149
People have found that moving the stock rear O2 sensor out of the flow with an extender affects the AFR read by the sensor. Wouldn't the same thing happen with a WB sensor?
Apr 5, 2009 | 05:49 AM
#150
I guess nothing of 0015 yet ?
I wanted to bring up that I run the Innovative LC-1 and at one point I thought my front o2 sensor was junk. So with Innovates simulated narrow band I switched the front o2 sensor pin with the Innovative NB signal and although it wasnt the problem I had I found that the car runs fine with either o2 sensor input with no difference in drive-ability or fuel consumption.
I wanted to bring up that I run the Innovative LC-1 and at one point I thought my front o2 sensor was junk. So with Innovates simulated narrow band I switched the front o2 sensor pin with the Innovative NB signal and although it wasnt the problem I had I found that the car runs fine with either o2 sensor input with no difference in drive-ability or fuel consumption.