I bought a cat-less header for my 2022 GR86. I got a "check engine light" (CEL) (likely, P0420) because I didn't do a complete install. A defouler (aka oxygen defouler, sensor bung adapter, or oxygen sensor restrictor) was required for the second, down stream O2 sensor. I had been delayed getting one. This is my STUPID stupid story about fixing the CEL from NOT having the defouler installed with the cat-less header.
Road Odyssey:
https://www.facebook.com/profile.php?...
Road Odyssey YouTube Channel:
/ @roadodyssey
Chapters:
0:00 Intro
1:47 Header Install
2:28 O2 Sensor Install
2:52 Where Defouler Goes
3:31 How Defouler Works
4:15 Finding A Defouler
5:24 Buying Defouler
7:44 Defouler Install
8:50 My New GR86
9:18 Enjoying the 86
10:05 My 86 Related Videos
11:37 Conclusion
#gr86 #toyota #brz #header #headers #headerinstall #o2sensor #defouler #bungadapter #p0420 #performancemods #roadodyssey #cel #checkenginelight