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Home > Maintenance & Modifications > 3.2L Exhaust Manifold Catalytic Converter Replacement DiY

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merlinj79 Member Since: 14 Aug 2019 Location: San Diego Posts: 313

Telfred wrote: Does an old Catalytic converter hamper performance Would removing / cleaning it improve performance? Depends. If the catalytic metals just got burned off of the substrate structure, the flow should not be impeded. But if the there was enough heat (from excess unburned fuel) to melt the substrate structure, which is pretty common, it would tend to fall apart and clog up reducing flow. Cheap work-around might be to remove the loose stuff and cut or drill out at least part of the substrate structure. Might need to cut the cat in half to get to the substrate and then weld it back together.

22nd Jan 2022 4:23 pm

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