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So I searched but can't find a clear answer: What are the most effective and durable catalytic converters for a dual duty street/track day car? 2011 GT, totally stock motor and tune. I want to stay emissions legal which requires cats here in MA. I am struggling with 0420/0430 codes after the original cats failed at about 140K miles. I tried aftermarket Walker cats but they failed pretty quickly. I am looking for no code and durable, and I suppose a better flowing cat would be a nice benefit if possible but not really a priority. Is a 200 cell sport cat such as the Magnaflow likely to throw a CEL? Would it hold up better than a 400 cell oem cat? Should I just go back to oem Ford?
I just posted a wanted classified for oem Ford cats but I'm not sure if that is the best approach?
Sorry for all the questions. Any advice is much appreciated, this is frustrating.
I just posted a wanted classified for oem Ford cats but I'm not sure if that is the best approach?
Sorry for all the questions. Any advice is much appreciated, this is frustrating.