So I plan on putting in a wideband sensor but I need help on sensor location.

Mods:
SLP lid
No cats
Magnaflow muf
One heavy foot

I still have stock headers, y-pipe.

I'd like the best location possible

 

I'd like to know the answer to this also, I just ordered my AEM wideband last night.

 

I've been told that it goes after the first o2 and before the last o2.. but I'm still confused on this

 

in the 2 setups that I have run I put the sensor just after the first sensor before the cat with the sensor mounted less than 90 degrees to level. Most kits will have instructions on how to mount it. If you run it after the cat the it won't read properly. Also, remember that you are going to be reading one bank, which ever bank that you have it installed on.

 

I don't have cats installed, so should I just pick a spot on the section of pipe that they welded in? And what does the angle mean? I just planned on having a bung welded on. As far as a bank specific since one side as a rule should run as the other side with minor differences. I'm running near stock and my only future mods are cam and headers.

The gauge I got is a used one. AEM brand

 

I put it in the merge of the Y pipe. This way its picking up both sides of the engine.

 

What if the y-pipe is after the cats? Any way to get it reading both sides without two sensors?

 

i put mine on the drivers side right under the drain plug for the floor, so I could run the wires up through that. When you weld in your bung make sure its angled upwards or youll get a rich reading if fuel puddles by the sensor.

 

I think for that set up your going to have to pick a side. I would go with the driver side since the #7 hole is alway the leanest and prone to failure.

I would like to know why the weld in wide band instructions tell you to go before the cat's, but when you are getting a dyno tune, they stuff the wide band in the tail pipe ???

 

OK now I am confused as hell, wouldn't at the merge if the stock y-pipe be really in accurate? What I may just do is put it in the top side of the section of the cat they cut off. *just a blank pipe*

 

If you don't have any cats, then why not just put it in one of the rear o2 sensor bungs?

I would put it on the driver's side instead of the rear o2 sensor. No need to weld anything and it will be more accurate than after the merge since the closer to the collector the better.

 

I actually might do that, just pull the rear driver 02 and just plug in the wideband. i planned on doing the driver side on this setup. since i have been told #7 is the one that most commenly fails.

 

I think that the angle suggestion has more to do with condensation settling on the sensor. Keep the sensor away from the floor, and don't mount it at 90 degrees. Mount it higher than 90 degs, so that condensation will not sit on it.

 

What is the rear o2 sitting at on the F-body? If I can I will pull it and just swap the two. I don't have a way of looking atm

 

I mounted mine level on the drivers side no issues in 6+ years. Its about 8" back from the collector. Drivers side is supposed to be the leaner bank. Or could bling it out with dual wide bands.

 

Someone correct me if I'm wrong, but you shouldn't take out an o2 sensor, and install a wideband in that o2 bung. Your motor needs both driver and passenger side o2's for the pcm to adjust correctly.

 

Yes, but it only needs the first two (the upstream sensors) to calculate fuel trim. The suggestion to replace an O2 sensor was for a downstream sensor on a vehicle without catalytic converters...which would make the downstream sensors useless anyway since their main function is to monitor cat efficiency.

 

My bad. Missed the part saying "rear" driver o2 sensor.

 

All very good info! And since my rear o2s are useless anyways I will plug it into that

As far as power. Where do most of you tap for switched 12v power *accessory power*

 

Anyone? I thought about hooking it to the alternating 12v from the head unit but I already have my axxs controls for the steering wheel on it as well. I don't want to overload that wire