What does adding a 'T' to a car mean?

[Darlene]

Adding a 'T' to a car means that the engine is equipped with a turbocharger, while not having a 'T' indicates that the car uses a naturally aspirated engine. Turbocharging refers to the process where the car's exhaust gases are not directly released into the atmosphere but instead are used to drive the turbocharger, which pressurizes the intake air to improve its efficiency. A turbocharger is essentially an air compressor that increases the intake air volume by compressing the air. It utilizes the inertial force of the exhaust gases expelled by the engine to drive a turbine in the turbo chamber, which in turn drives a coaxial impeller. The impeller then compresses the air delivered from the air filter pipe, pressurizing it before it enters the cylinders. Turbochargers can increase the air flow into internal combustion engines or boilers, thereby enhancing the engine's output power.