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Constant P0420/P0430
I've replaced both cats, all the sensors, I use top tier fuel, there's a catch can in place and I STILL ****ING THROW P0420/P0430 randomly. I clear it and it usually goes away until the next fill up.
I'm at the point I'm thinking a cat delete, both myself and my mechanic don't know what to do.
Anyone else have this?
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