O2 sensor location?

[mopowers]

For those of you with a wideband? Can you guys post a picture of where you mounted your O2 sensor?

I understand they should be at a downward angle to prevent condensation buildup. Are there any other requirements? Do they need to bee a certain distance to the collector?

Thanks!

 

[Phreakish]

I mounted mine about 8" downstream of the collector flange, mostly because it was a convenient spot. Would have preferred within 2-3".

Closer to the collector, or in the collector, is better. The farther you are from any one cylinder, the longer it takes for the sensor to get a 'read' and the tougher it is to keep them up to temperature - which is important for accuracy and to keep them clean.

 

[TrailBeast]

Mine is about 4" downstream of the collector and the tip where the wire comes off the sensor is at about a 45 degree angle up on the trans side of the pipe. (to keep crap from possibly grabbing the wires.)
The extra wire I tucked up behind the heater box.

Sorry, no pics.

 

[mopowers]

Thanks guys! Have any ever heard of anyone running two sensors with a one-sensor gauge and using a switch to switch from one to the other when tuning?

 

[magnummopar]

Use a laser temp gauge to check for hottest temp behind the collector 2-4" back should be best spot.

 

[crash520]

I had TTI fit sensor bungs to my headers, they are in the collector about 2" befor the flange, you can get a single gauge with dual sensors, I have a gauge in one and my EFI sensor in the other