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2. Cold air intake - Wikipedia

   en.wikipedia.org/wiki/Cold_air_intake

   Some strategies used in designing aftermarket cold air intakes are: Reworking parts of the intake that create turbulence to reduce air resistance. [2] Providing a more direct route to the air intake by eliminating muffling devices. Shortening the length of the intake. Placing the intake duct to use the ram-air effect to give positive pressure ...

3. Ram-air intake - Wikipedia

   en.wikipedia.org/wiki/Ram-air_intake

   Ram-air intake on a Kawasaki ZX-12R. A ram-air intake is any intake design which uses the dynamic air pressure created by vehicle motion, or ram pressure, to increase the static air pressure inside of the intake manifold on an internal combustion engine, thus allowing a greater massflow through the engine and hence increasing engine power.

4. Secondary air injection - Wikipedia

   en.wikipedia.org/wiki/Secondary_air_injection

   The pump's air intake is filtered by a rotating screen or the vehicle air filter to exclude dirt particles large enough to damage the system. Air is delivered under light pressure to the injection point(s). A check valve prevents exhaust forcing its way back through the air injection system, which would damage the pump and other components.

5. Velocity stack - Wikipedia

   en.wikipedia.org/wiki/Velocity_stack

   Short velocity stacks on a 302 cu.in. Ford FE engine in the tight confines of a Ford GT-40. A velocity stack, trumpet, or air horn [1] is a typically flared, parallel-sided tubular device fitted individually or in groupings to the entry of an engine's air intake system to smooth high speed airflow, and allow engine intake track tuning to incorporate pressure pulses created by its internal ...

6. Exhaust manifold - Wikipedia

   en.wikipedia.org/wiki/Exhaust_manifold

   Tubes that are too large will cause the exhaust gas to expand and slow down, decreasing the scavenging effect. [4] Tubes that are too small will create exhaust flow resistance which the engine must work to expel the exhaust gas from the chamber, reducing power and leaving exhaust in the chamber to dilute the incoming intake charge.

7. Inlet manifold - Wikipedia

   en.wikipedia.org/wiki/Inlet_manifold

   Carburetors used as intake runners A cutaway view of the intake of the original Fordson tractor (including the intake manifold, vaporizer, carburetor, and fuel lines). An inlet manifold or intake manifold (in American English) is the part of an internal combustion engine that supplies the fuel/air mixture to the cylinders. [1]