Increased intake pressure and temperature reduces ignition delay and decreases flame speed.

Superchargers and turbochargers are both devices that can increase the power of an internal combustion engine: Superchargers: Compress air above atmospheric pressure without creating a vacuum. This forces more air into the engine, allowing the engine to burn more fuel and produce more power. Superchargers are usually the best choice for smaller engines. Turbochargers: A forced induction device that uses the energy of the exhaust flow to compress the intake air. This forces more air into the engine, producing more power for a given displacement. Turbochargers are better for larger... Show more

Superchargers and turbochargers are both devices that can increase the power of an internal combustion engine:
Superchargers: Compress air above atmospheric pressure without creating a vacuum. This forces more air into the engine, allowing the engine to burn more fuel and produce more power. Superchargers are usually the best choice for smaller engines.
Turbochargers: A forced induction device that uses the energy of the exhaust flow to compress the intake air. This forces more air into the engine, producing more power for a given displacement. Turbochargers are better for larger engines. 

Here are some other differences between superchargers and turbochargers:
Power: Superchargers instantaneously boost the engine's power but result in more fuel consumption. Turbochargers provide better fuel efficiency and reduce emission, but boost power at a specific rpm resulting in turbo lag.
Fuel efficiency: Turbochargers are more fuel-efficient than superchargers.
Temperature: Superchargers can increase the internal temperature of an engine, which can lead to premature wear and tear. Turbochargers can also get very hot, especially when the engine is pushed to its limits.
Power source: Superchargers are driven by the engine's driveshaft, while turbochargers are powered by the engine's exhaust gases. 

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