A turbocharger consists of two turbines (exhaust and intake) connected by one shaft, it works by using the energy of the fast exhaust gases exiting the engine to pump more air into the engine intake. When the car is accelerated, the exhaust-side turbine is spun by the exhaust gases, which in turn spins up the intake-side turbine. The intake-side turbine pushes the air into the engine under pressure. As the temperature of air entering the engine increases under pressure, two intercoolers are used to keep intake air cool and more dense. Pumping more air into the engine with turbochargers allows more fuel to be injected, which results in more power. The 3.8L V6 VR38 twin-turbo engine in the 2014 Nissan GT-R is rated at 545 horsepower at 6,400 rpm.