where to mount wideband o2 sensor?? Help please

[-HIC-]

SO I have longtubes with Off road y pipe, is it ok to install the sensor right where the ypipe brings the two sides together, or is that too far from the engine, would I need one for each side?

[Srt8Jeep]

best place would be the header collector if possible just make sure you put it in at a slight angle and not at the bottom to avoid any condensation

[-HIC-]

So it is good enough to just monitor one bank?

[mean05]

yeah your fine just keeping an eye on one side

[Srt8Jeep]

Thats how I roll

[thunder550]

SO I have longtubes with Off road y pipe, is it ok to install the sensor right where the ypipe brings the two sides together, or is that too far from the engine, would I need one for each side?

Personally I would actually prefer running it where the Y pipe joins the two sides together so you can monitor both sides and get a good average, but that's just me. I don't think it matters too much how far it is from the engine, within reason.

[-HIC-]

Allen, any input on this one?

[-HIC-]

Cool, by reading the Narrowbands it seems I am running ok around 875 mv at WOT on both banks. So I will install the Wideband on the driver side header collector. The good news it it looks like I have plent of room to weld in the bung without removing the header. I found this chart somewhere for reading narrowband o2 mv's if anyone is interested.

Gauge READING FULL THROTTLE AIR/FUEL RATIO
.000 17.0:1
.100 17.0:1
.200 16.0:1
.300 15.5:1
.400 15.0:1
.500 14.7.0:1
.600 Dangerously Lean 14.6:1
.700 Getting lean 14.5:1
.800 Max power(Lean) normally aspirated 14.2:1
.875 Max Power normally aspirated 13.5:1
.900 Max Power (Rich) (NOS,blower,Turbo) 13.2:1
1.000 Very Rich 12.5:1

[thunder550]

I would STRONGLY encourage you guys to NOT use your narrowband O2s to log your AFRs. They are only good for telling your PCM to run at stoich. Here's a graph I made of mine in relation to my wideband awhile back. You can see why it would be incredibly inaccurate to rely on narrowband O2s for precision tuning. There is a ton of noise in this chart.

[Srt8Jeep]

Why no narrowbands they make for a pretty light show-LOL