I just remove my catalyic converter recently and two weeks after i removed it my muffler sounded like something worn ......(car 13 years old). is it time for a new muffler and how much does a oem muffler cost?
Your car does not deserve anything new at this point. Go to the nearest scrap yard and salvage something or custom fit it with whatever stuff from Canadian Tire. Or, it is going to be around $500 for an OEM.