Catalic Converter

Hi Does anyone know what causes increased gas flow in a motor, which damages catalic converters? Over the past nine years I've had to replace my catalic converter 4 times. I was told that to much gas is flowing through the engine which damages the catalic converter. The last converter I had installed lasted a little over a month.

oxygen sensors spark plugs distributor cap and rotor vacuum leaks etc can be anything has your car had a tune up or it can be your piston rings are weak or a valve thats staying open during the compression stroke


more info what kind of car mileage and mods and service history any CEL