An internal combustion engine operates by burning a mixture of fuel and oxygen within
the engine’s cylinders. The fuel injectors provide a precise amount of fuel, which
combines with air delivered by the air intake system. A spark plug then ignites the
volatile gas, creating an explosion that forces the piston downward—turning the
crankshaft. The piston-moving force that’s created during the combustion cycle is
what produces horsepower. K&N performance products are designed to increase the
efficiency of your engine’s combustion process.