ok here's the situation I am running a punched cat, headers and si b-pipe and obd 2. I thought my cel was just on b/c of the cat and secondary o2 but i ran the code today and its the primary o2 saying low voltage or high voltage (the light blinks once when I checked it) both sensors are black. I have not checked the plugs yet, going to tomorrow. Want to know if anyone knows whats going on. The car will also idle really low almost to the point of stalling but not all the time. Can someone help or get me in the right direction.