A catalytic converter sensor measures the amount of oxygen in a vehicle's exhaust gas. The sensor is located in the converter, which is part of the exhaust system.
There are a few ways to trick a catalytic converter sensor, but they all involve tampering with the oxygen levels in the exhaust gas. One way to do this is to add an extra fuel injector. This will cause more fuel to be burned, and less oxygen will be present in the exhaust gas. Another way to tamper with the oxygen levels is to block off part of the exhaust system so that less gas can escape. This will also reduce the amount of oxygen in the exhaust gas.
If you're caught tampering with your catalytic converter sensor, you could face serious penalties from both state and federal authorities. Not only is it illegal, but it's also unsafe and can lead to costly repairs down the road.