1. Forced Induction is used to Improve the Internal combustion engine performance of many motor vehicles by increasing the power and torque output by forcing more air into the engine.

*2. "power on demand" that is cheaper than buying an actual fast car.

*3. Lag in power delivery as the turbocharger winds up.

4.It uses a spinning impellor to push more air into the engine.  The crankshaft assists in the spinning of the impellor.

*5.  Porsche 911 Turbo, PT Cruiser Turbo, Toyota Supra, Nissan Skyline, and many others.