The biggest advantage of the turbocharger is that it can greatly increase the power and torque of the engine without increasing the engine displacement. Generally, the power and torque of the engine after adding the supercharger are increased by 20%. ~30%. The disadvantage of the turbocharger is the hysteresis, that is, the inertia of the impeller reacts slowly to the sudden change of the throttle, which causes the engine delay to increase or decrease the output power. This is a bit of an instant for a car that suddenly accelerates or overtakes. a feeling of.