Thread: cat removed new problem

Install a rear O2 sensor with a defouler.

Pretty cheap.

Originally Posted by matt5112

Install a rear O2 sensor with a defouler.

Pretty cheap.

Does that even work, my 3" catless dp with no o2 bung your saying drill/tap the dp weld bung on then plug a o2 in. Well I have a new rear o2 sensor but no bung or defouler is what I think is a o2 extension, correct me if im wrong don't know what a defouler is? But will this still work? I was told the Cat Diagnostics Test was so smart, that it would notice the values if the rear o2 bung with rear o2 sensor along with the defouler it would still not work because the pcm would not see the same values, hence the only way to rid the problem is deleting the cat diagnostic test and no other way.