Will 4S stores steal the three-way catalytic converter?

[DiCora]

4S stores will not steal the three-way catalytic converter, as it is usually welded inside a section of the exhaust pipe and would require cutting to remove. Below is an extended introduction on the topic: Self-check: If you suspect that your car's three-way catalytic converter has been stolen, the simplest method is to take it to a repair shop and inspect it on a lift. Additionally, if you notice that the exhaust sound becomes significantly louder when starting the engine, it may indicate that the three-way catalytic converter has been stolen, as its removal leads to unmitigated noise. Monitor exhaust: Lastly, pay attention to whether the smell of the vehicle's exhaust has become stronger. If the three-way catalytic converter fails or is stolen, pollutants in the exhaust cannot be eliminated, resulting in a noticeably stronger odor.