Discussion Starter · #1 ·
So a couple weeks ago I swapped my stock down pipe with a full 2.5" one from TT. Durring the swap I removed my cat to make the swap easier. When I was removing the cat I first removed the pre cat O2 to see how it looked. It had a good amount of white deposits around it but also some gray. I had used some fuel system cleaners recently and read that could cause the white deposits on the sensor. Below I have a photo of the sensor when I changed it. What do you guys think? Should I replace the sensor?