We drill holes in an exhaust header to demonstrate how even the tiniest exhaust leak can affect O2 sensor accuracy and yield unreliable tuning data.

Pull it out to disconnect the oxygen sensor from the car's electrical system. Use a wrench to loosen the oxygen sensor and remove it. Due to the heat from the engine and exhaust system, the sensor ...

An O2 sensor, also known as an oxygen sensor, measures the oxygen content in your vehicle’s exhaust stream. It plays a crucial role in controlling the air-fuel mixture your engine burns.

An O2 sensor, also known as an oxygen sensor, measures the oxygen content in your vehicle’s exhaust stream. It plays a crucial role in controlling the air-fuel mixture your engine burns.