Nitrous oxide Systems for cars

If you've watched the new 'Fast & Furious' movie maybe you've noticed that just like the first one 'The Fast and the Furious' you keep seeing those blue NOS bottles. So what is Nitrous Oxide or NOS and how does it make the car go so fast?

What is Nitrous? Simply put, Nitrous (N2O) creates large amounts of horsepower by creating more oxygen in the engines combustion chamber while simultaneously introducing additional fuel. The added oxygen allows the additional fuel to burn which creates increased horsepower for short bursts of torque and speed.

In applications for vehicle racing, nitrous oxide (often referred to as just "nitrous") allows the engine to burn more fuel by providing more oxygen than air alone, resulting in a more powerful combustion. The gas itself is not flammable at a low pressure/temperature, but it delivers more oxygen than atmospheric air by breaking down at elevated temperatures. Therefore, it is often mixed with another fuel that is easier to deflagrate.
Nitrous oxide is stored as a compressed liquid; the evaporation and expansion of liquid nitrous oxide in the intake manifold causes a large drop in intake charge temperature, resulting in a denser charge, further allowing more air/fuel mixture to enter the cylinder. Nitrous oxide is sometimes injected into (or prior to) the intake manifold, whereas other systems directly inject right before the cylinder (direct port injection) to increase power.

The technique was used during World War II by Luftwaffe aircraft with the GM-1 system to boost the power output of aircraft engines. Originally meant to provide the Luftwaffe standard aircraft with superior high-altitude performance, technological considerations limited its use to extremely high altitudes. Accordingly, it was only used by specialized planes like high-altitude reconnaissance aircraft, high-speed bombers, and high-altitude interceptor aircraft.