

In theory, an aftermarket cat is higher flow than it's O.E. These substrates are made like a beehive honeycomb and are comprised of 400 cells per square inch across their surface. This coating is what causes the catalyst reaction once the converter reaches a certain temperature supplied by the vehicles exhaust gasses. It's interior is not designed to move exhaust gasses along more quickly such as having a spiral core.Ī catalytic converter is designed to reduce harmful exhaust gasses.that's all! Basically all aftermarket cats have a ceramic substrate (the guts) that during manufacturing is coated with a solution of platinum, palladium and rhodium. THERE IS NO SUCH THING AS A HIGH FLOW OR PERFORMANCE CATALYTIC CONVERTER!! A catalytic converter has no moving parts nor is chambered like a muffler, or have elaborate packing like a muffler. Well this may come as a surprise to some and will really bust the bubble of what some companies are selling. We get calls almost everyday from customers wanting to know how much a "high flow" or "performance" catalytic converter will cost for their car. There are many companies on the web today selling what they call a "high flow" or "performance" catalytic converter.
