cheap cat converters
Has anyone experienced a loud rumbling and pinging noise do to cheap cat converters? I am stumped with this noise , I have asked about 5 different auto shops and no one seems to know what it is for sure , it could be the cat but it is a new one so i wonder if it is cheap. The sound seems to echo through the downpipe to the cat and it is louder then my exhaust. please help robert 91 corrado
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