8 Best High Flow Catalytic Converters (September 2026) Expert Reviews

best high flow catalytic converters

A high flow catalytic converter is an aftermarket exhaust component that swaps the dense ceramic honeycomb of a stock catalytic converter for a less restrictive metallic (or thin-wall ceramic) substrate, typically rated at 200 to 400 cells per square inch and coated in platinum, palladium, and rhodium. The trade-off is real: you keep enough catalytic … Read more