I got a wideband setup for Christmas and now want to install it. Can I install it in place of one rear O2 sensor since I had them turned off?

Thanks

 

Sure, if you had the rear O2s turned off just pull 1 out and put the wide band in...

 

Thanks! I figured that would work but just wanted to make sure.

 

Do you still have cats? I wouldn't put it post-cat.

 

I still have cats for a few more weeks till I install my headers and x pipe. I was just trying to install the wideband now so it would be one less thing to do that day.

 

Do LG Pro's have rear 02 bungs? If not where is the best place to install one at?

 

I believe both Pro and Street come with all four bungs. If you install an additional bung, I'd do it near an existing front bung. There are several archived threads with pics of where folks have mounted WB units.

Which WB unit did you get? Can you emulate NB output with yours? That's a good alternative if you don't want to add a bung or want a permanent WB installation.

 

I have a LM-1 wideband and LG long tubes. The LGs I have only have forward O2 bungs in them (and I believe all LGs have only forward bungs as the cats are located significantly farther down). I setup the LM-1 to emulate the stock narrow band sensor. Pics & instructions from my install can be found here:

http://kashmir.thend.org/~mkane/Corvette/wbo2.html

If you have any questions, feel free to email me. Also, the wideband was responding a tab bit slowly in the HPTuners log file posted at the bottom of the above URL. I have since tweaked the sensor output and it is very closely emulating the stock sensor. No codes or issues.

Matt

 

I belive the older LG long tubes only had two bungs located in the collector. The newer ones have four, two in the collector and two in the X-pipe.

 

I ordered my LG Pro's today, they have 4 bungs so that solved all my problems.

 

Just curious, why the extra two bungs?

 

They're not extra, they duplicate the stock configuration - two pre-cat and two post-cat.

 

 

I ordered the system with no cats.

 

Just seems like the post cat ones would be extremely far down the pipe to really tell you anything or be worth hooking up. For what it's worth, I have the offroad version of the LGs on my car & that's probably why I didn't see the other two bungs.

 

On the C5, the rear sensors are not used for any AFR adjustment. They are there solely for a diagnostic - to determine if the cats are working or not.

 

If you are going to install a Wideband than you are better off to install a new bung. An O2 sensor has what's called a trail in simple terms that comes out of it. This can corrupt the signal from sensor down stream. You need to install the WBO2 first. I have been through about 3 sets of the Innovate O2 sensors before changing brands. Our WBO2 is located in the front bung. Then after the X-pipe starts the factory O2 is located before the cat. This way your WBO2 is not corrupted. If you are using a Innovate unit make sure that you wire the heater seperate of the keyed 12V. They want the car running for at least 30 seconds before you heat the O2. I had nothing but problems with all my Innovate stuff including there 6 channel reciever, I ended up going with a Industrial grade O2 sensor and a custome driver for it.