Magnaflow now offers two new types of high flow performance catalytic converters; race cats have a straight through design consisting of a platinum, palladium and rhodium material. When the material heats up, toxic fumes in the engine's exhaust are reduced due to a chemical reaction. These cats quiet the exhaust with their stainless mesh, while cutting down on emissions just enough for cat-required drag racing classes.
The spun high flow cats come in both ceramic and the more durable metallic materials. You’ll find the filtering capabilities are 300 CPI with the metallic cats and 400 CPI on the ceramic version. As far as flow goes, the metallic flows 330 CFM while the ceramic cats flow 180-200 CFM. Both cats are applicable up to 5.9-liter or 6000 pounds.
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http://www.magnaflow.com
