Modifying an engine involves altering its components to enhance performance, efficiency, or durability. Engine modifications range from simple upgrades, such as installing a cold air intake or replacing spark plugs, to complex overhauls, such as increasing displacement or adding a turbocharger.
Engine modifications offer several benefits. They can increase horsepower and torque, leading to improved acceleration and top speed. Modifications can also enhance fuel efficiency, reduce emissions, and extend engine life. Historically, engine modifications have played a significant role in the development of high-performance vehicles, racing, and automotive innovation.