Where's a good place to put it? I used a section of some old 3" dp I had left over from someone else's build and it already had an o2 bung welded on it. Only problem is it sits behind the oil pan right before my flex pipe and where it bolts up to the rest of my exhaust. Normally I wouldn't think twice about it, but I did notice that according to my light show gauge that it never comes off the rich side. The plug is brand new, and even at full throttle the most it does is blink down a notch or so, then go back to full rich. Now I'm not using that thing to tune by, but I'm thinking it might be an indication of the o2 sensor not heating up enough to even read ----. Where would be a good spot for me to mount the stock o2, or should I just say ---- it and do a complete o2 disable?

 

I've heard to put it about 8 inches from the turbo, for a good reading.....

 

anywhere on the downpipe really. the gasses are same as long as the pipe has no leaks

 

4" from the turbo to get accurate readings...

 

I'm seeing a general pattern of worthless post-whoring on your part.