Sorry guys didn't see the post until now I got two new Walker cats for the car and are installed. Car actually runs alot better with them installed I think it was looking for alittle backpressure. I would definetly wanna try your diablo tuner if you are still interested in giving me a hand would throw you 20 bucks for gas if you wanted to meet up I will be out driving around tonight for a couple hours still trying to get ok status the cat, Evap, and EGR monitoring systems.