I intend to add an aftermarket catalytic converter to my car, after its was stolen, and I do not intend to buy the original because it is very expensive, Which works to divert toxic gases in the exhaust of the car into less poisonous gases. However, I read that aftermarket catalytic converters have a shorter lifespan than the original ones, and in my opinion as a logical result, the aftermarket catalytic converters should have a longer lifespan because they do not purify any of these gases and it is just a mufflers, and that the temperature inside it is lower than in the original catalytic converters, because there are no precious metals in its components, am I right?
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