I had an aftermarket unit installed that lasted for 3 months. The reason was because my engine was not running right. If your engine is running good, no codes no misfires it should be fine. Engine was repaired and the second aftermarket unit lasted until the V8 was installed with yet another aftermarket cat which was a few years later. My v8 has been running with a magnaflow performance cat AND passes local emissions testing for almost 3 years.
Knowledge has no value unless its shared with others.
Exploration Machine- 02' CC V8 swap. 300K+
Portable Roller Coaster- 07' MKV VW GTI
Its another Jeep- 98 TJ