Don’t take an emissions test until you’ve replaced a bad catalytic converter. Residue from exhaust gases can build up in the catalytic converter over time, resulting in increased emissions that will definitely register during the test. If your catalytic converter is clogged or otherwise in bad shape, replace it immediately. Good thing Parts Oasis has a wide range of catalytic converters made by top manufacturers in the industry. Take a look at our products today and choose one that matches your application.