Turbocharger is a common technology in modern engines, which increases the intake pressure to increase the engine's output power and torque. Under the action of turbocharger, the engine can provide greater power output at lower speeds and also improve fuel efficiency.

The use of turbochargers has the following effects on engine performance:

Firstly, turbochargers can increase the output power and torque of the engine. By increasing intake pressure, turbochargers can enable the engine to provide greater power output at lower speeds, thereby improving the vehicle's acceleration performance and maximum speed. In addition, turbochargers can also increase the torque output of the engine, making it easier for vehicles to climb hills or tow under high loads.

Secondly, turbochargers can improve the fuel economy of the engine. Due to the fact that turbochargers can provide greater power output to the engine at lower speeds, vehicles can use higher gears at low speeds, thereby improving the fuel economy of the engine. In addition, turbochargers can also maintain a lower engine speed when driving at high speeds, further improving fuel economy.

Finally, the use of turbochargers will also have an impact on the reliability and durability of the engine. Turbochargers require higher temperatures and pressures to operate, therefore requiring higher oil film thickness and higher oil pressure to protect the turbocharger and engine. In addition, the rotating parts of the turbocharger require lubrication and cooling, so regular oil and coolant changes are required.