Wideband Install
Wideband Install I got a wideband setup for my 02 Z06. Can I install it in place of one of my rear 02's since they are turned off? I had them turned off when I had the car tuned but they are still installed. I should be able to just swap it out right?
TECH Fanatic
Joined: Aug 2005
Posts: 1,691
Likes: 1
From: Sunny London, UK
Yes you can but be aware that the cats are there to further reduce emissions, which includes unburnt hydrocarbons which they do by using spare O2. So you will always read different post cat.
It will be tricky to figure out if you are exactly at stoich or not. Ive heard it makes about 0.3 AFR difference.
You can however use it to simulate your pre cat narrow bands pretty well. Which I think is the better idea.
It will be tricky to figure out if you are exactly at stoich or not. Ive heard it makes about 0.3 AFR difference.
You can however use it to simulate your pre cat narrow bands pretty well. Which I think is the better idea.
This would be just a temp setup untill I install my headers and x pipe with out cats. When I had my car on they dyno they just stuck the probe into my exhaust tip, thats why I figured it would work. I just dont want to mess up my new wideband by installing after the cats for a few weeks.
if you have one of the better widebands, theres two outputs on it.
setup one to simulate a stock narrowband O2 sensor.
setup the other output for your tuning/logging software
remove one of your stock front O2s... put the wideband O2 in its place
take a dead/old 02 sensor and cut the plug off of it.
wire the plug so the narrowband output you setup on the wideband goes into it.
you can also get your O2 sensor power from the plug.
you should now have the car running off of the wideband, AND you can datalog it... all without adding another bung.
when you're done tuning, replace the wideband with the stock O2, and you're back to normal.
setup one to simulate a stock narrowband O2 sensor.
setup the other output for your tuning/logging software
remove one of your stock front O2s... put the wideband O2 in its place
take a dead/old 02 sensor and cut the plug off of it.
wire the plug so the narrowband output you setup on the wideband goes into it.
you can also get your O2 sensor power from the plug.
you should now have the car running off of the wideband, AND you can datalog it... all without adding another bung.
when you're done tuning, replace the wideband with the stock O2, and you're back to normal.
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Originally Posted by minytrker
If I install the wideband in a seperate bung will it hurt to just leave it install in the car all the time?
a O2 sensor has a heating element.
this element must be turned on whenever the car is running... otherwise water condensation, and other nasty exhaust things build up and ruin your O2 sensor.
the factory sensors are on via relay whenever the key is on... if you plan to leave the wideband in all the time, it must also be on when the key is on.
if you wire it up that way, then yes, you can leave it in all the time.
otherwise, you should remove it and install a plug in the exhaust.
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I did the WB seperately, with its own welded on bung. Pre cat for sure, near the stock O2 location. You can as some mentioned use it for the narrowband PCM reading as well, but im not sure how close it will be compared to the stock one it replaces
Originally Posted by Steel Chicken
I did the WB seperately, with its own welded on bung. Pre cat for sure, near the stock O2 location. You can as some mentioned use it for the narrowband PCM reading as well, but im not sure how close it will be compared to the stock one it replaces
Teching In
Joined: Oct 2005
Posts: 33
Likes: 0
Originally Posted by MrDude_1
if you have one of the better widebands, theres two outputs on it.
setup one to simulate a stock narrowband O2 sensor.
setup the other output for your tuning/logging software
remove one of your stock front O2s... put the wideband O2 in its place
take a dead/old 02 sensor and cut the plug off of it.
wire the plug so the narrowband output you setup on the wideband goes into it.
you can also get your O2 sensor power from the plug.
you should now have the car running off of the wideband, AND you can datalog it... all without adding another bung.
when you're done tuning, replace the wideband with the stock O2, and you're back to normal.
setup one to simulate a stock narrowband O2 sensor.
setup the other output for your tuning/logging software
remove one of your stock front O2s... put the wideband O2 in its place
take a dead/old 02 sensor and cut the plug off of it.
wire the plug so the narrowband output you setup on the wideband goes into it.
you can also get your O2 sensor power from the plug.
you should now have the car running off of the wideband, AND you can datalog it... all without adding another bung.
when you're done tuning, replace the wideband with the stock O2, and you're back to normal.
I did it exactly like this and it works perfectly. I am using the LC1.
Jeremy
Well I ordered headers and x-pipe and it comes with 4 bungs so I am going to just install the wideband in one of the rear o2 bungs since my rear o2's are turned off. How far off if any will my a/f reading be using the rear bungs.
Originally Posted by minytrker
Well I ordered headers and x-pipe and it comes with 4 bungs so I am going to just install the wideband in one of the rear o2 bungs since my rear o2's are turned off. How far off if any will my a/f reading be using the rear bungs.
if you have cats... its off. the O2s should be infront of the cats..
if your header collector gaskets leak, it could make you read lean, but its not too much of a issue.
Thanks for all the help. I am finishing up my header install tomorrow. So after a few miles with the headers in and everything good and leak free I will install the wideband setup.
