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I fabricated some Eastern Catalytic high performance cats to fit onto my setup. Ran all summer tuning (3000ish miles) and about 10 1/4 mile runs. The whole time i never had my COT turned on in my tune. I'm pleased to report that the cats are holding up very well. Just checked them.
Not sure I'm ready to definitively say these will hold up forever or give them my full backing. But so far, so good.
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