ZachCouch Posted May 12, 2018 Share Posted May 12, 2018 I'm swapping up-pipe and headers on my Outback XT tomorrow. I've got everything ready to go, but I have a question regarding the front O2 sensor. I was told that after replacing the headers, the front O2 sensor needs a spacer put under it to pull it out of the exhaust stream and back farther into the sensor bung. The theory is that after replacing the headers, the exhaust gases move past the sensor too fast for it to get a proper reading. By pulling it back into its bung, it creates a pocket for exhaust gases to get trapped momentarily so the sensor can read them. I can't find anything else online about this, so I wanted to ask. I don't want to be pulling the header back down to add or remove a spacer, so I want to get it right the first time. Can anyone vouch for the validity of what I was told? Link to comment Share on other sites More sharing options...
Marvick08GT Posted May 12, 2018 Share Posted May 12, 2018 Not valid. Just install the correct sensor and torque to spec. Don't forget to add high temp anti seize if it doesn't already have it. Link to comment Share on other sites More sharing options...
ZachCouch Posted May 12, 2018 Author Share Posted May 12, 2018 I was suspicious. I've got some HT anti-seize ready to go. Thanks! Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.