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Failed cat, new cat suggestions? Do sports cats last?


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Welcome - What condition is your down pipe in as you can get a weld in cat however.

I have a car that has been decatted and passes emissions no problem but it has had a map on it that matches the components on the car, hi flow filter straight through pipe etc. and burns efficiently.

It is possible to pass emissions with an engine in good health without a cat in place. That doesnt make it legal but it does indicate that your cat was probably masking for a long time another issue with your engine and can no longer cope.

A weld in replacement cat may do the trick for a bit but I would investigate a bit further as I believe this is a symptom not the problem

 

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