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Re: P0420 and exhaust leaks
Posted to Technical Tips Forum on 10/20/2014

Here's a nice one. Cat further down was hollow. A ton of cracks at the manifold mickey mouse weld and it still ran and passed the cat monitor. Nox was over 2000 though Haha 1996 Toyota Tacoma DLX, Engine/Propulsion Photo Login to read more.

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