Quote:
Originally Posted by blsfrs
Installing an aftermarket primary cat is no guarantee that you won't get a CEL.
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There is a profound difference between a $150 cat and a $800 cat. The latter will work (at converting hydrocarbons) at least as good as OEM, if not better. We've never had a customer of our 911 cats get a CEL or fail emissions, even in Cali.
Quote:
Originally Posted by blsfrs
Now a days, I not sure of the legality of that action.
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It has always been illegal, but with the modding popularity over the last several years, it's got to the point where some manufacturers are low hanging fruit for prosecution.