[quote=“01AudiS4,post:10,topic:39195"”]
Looking at the picture, they were welded together, and it is the cat that has cracked. It can be welded, but NYS says that a cat can not be repaired, if it were warmer out I would weld it for you.
EDIT: and the reason they are 2 different colors is because the carbon coming out of your exhaust leak has blackened the cat behind the leak.
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what kind of welding would be used on something like that? Brazing? Mig? Tig? just curious…