No the cat is in good shape. I had it at the dealer again today for a valve adjustment and the noise was coming the resonator of the exhaust. I guess it has had it's time under my car. Yeah I know stock cars will not always pass, but my car is all back to specs w/a curr. tune up, so is no reason for it to fail. I'll let everyone know how goes it whne I get tested again on 12/1.