I haven't seen anyone who has used it and extended the o2 sensor throw the CEL.

 

I have 20k miles with the mechanical o2 fix (2 spark plug non-foulers $5). No CEL.

 

I bought that actual testpipe on ebay, Its made by tsudo. Its good quality. Very good welds. The only problem i had was making the the o2 sensor reach the bung. I had to pull the plug to get the xtra wire length. I do have a CEL PO134 but i dont think that is related to the test pipe.

 

You may already know this but PO134=O2 sensor circuit no activity (bank 1 sensor 1).

 

you may want to check out this thread on the UR test pipe or high flow cat. Appearantly it isn't all stainless.

https://www.evolutionm.net/forums/sh...d.php?t=172154

 

ttt.....

what happened to all the satisfied customers of UR and ebay??????