Posts Tagged: new catalytic converter break in period

How to Break-in a New Catalytic Converter So It Will Last

How to perform a catalytic converter break-in procedure Any time you replace a converter, you must perform a catalytic converter break-in procedure before taking it out on the street. The procedure is designed to slowly expand the converter’s matting (shown below), the material used to wrap and protect the ceramic brick that’s coated with precious metals. The matting is made with  vermiculite, a fibrous mat and an organic binder materials. During the manufacturing process, the matting is compressed and wrapped around the brick. In use, the matting must expand to … Read More