dsm4life
20+ Year Contributor
- 1,323
- 3
- Sep 24, 2002
-
Philadelphia,
Pennsylvania
This might be dumb but i ordered a cat back with test pipe. Now my question is i know there s 02 sensor in the exhaust, and if im not mistaken its after the cat . So my question is do i have to worry about the 02 sensor or should it bolt onto the cat back ?