The engine’s exhaust gases spin a turbine. 

This turbine drives a compressor that forces more air into the engine’s combustion chambers than would otherwise be possible. 

The denser air allows for more fuel to be burned, resulting in increased horsepower, torque, and overall engine power. 

A turbocharger often includes an intercooler, which cools the compressed air before it enters the engine, making the air even denser and further increasing power and efficiency. 

The turbocharger significantly boosts the engine’s horsepower and torque. 

By making the engine more efficient, the turbocharger helps to maintain good fuel economy despite the increased power. 

The extra power and torque are especially beneficial for heavy-duty applications, providing better pulling power.