I recently had SLP headers installed and I have an O2 code. IS this common? Also-I have the high-flow cats. Could this be an O2 read problem since it is use to being burned with full exhaust?

 

Check for a burned O2 harness.

 

what was the code description? also do your new headers support o2 sensors? and EGR? also check for exhaust leaks, which cause excess oxygen to enter the exhaust and cause a malfunction code. but im more intrested with the code description, highflow cats and headers shouldn't set any codes.

inform me on the code descrition or it's number if you can please