Catalytic Converter Exhaust Front Pipe For Honda Civic Gx 01-05 Stainless steelFor Honda Civic 1. 7L 2001 2005 Catalytic Converter Specification? Catalytic converters can be damaged by road debris, contaminated by engine oil or coolant, or become clogged and restrict exhaust flow. It's time to replace your catalytic converter when comes to the following symptoms Among the symptoms of a bad catalytic converter are: Sluggish engine performance Reduced acceleration Dark exhaust smoke The smell of sulfur or rotten eggs from the