The term "engine enhancements" refers to modifications or improvements made to an engine, typically in reference to automotive engines. These enhancements can include anything from upgrading parts such as pistons and cylinders, to adding performance-boosting features like turbochargers or superchargers, to improving fuel efficiency through the use of advanced materials or technologies. The goal of engine enhancements is generally to increase an engine's power output, improve its overall performance, and/or make it more environmentally friendly by reducing emissions or increasing gas mileage.