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does anyone kno where to get some 2nd hand or new stock cats? im pretty sure mine have burnt them selves out!!! thanks
If youre getting catalyst low efficiency trouble codes I would suggest replacing the cat gaskets first.
A common issue is the gaskets leaking and messing with the post cat readings.
They aren't really the type of seals that require gasket glue as they are a crush seal.
If they are trying to seal old gaskets it may still be leaking.