In the context of internal combustion engine, it increases airflow hence increasing power, this type of filter is well suited for clean city environment but not too suitable for off-road motorsports where dirt and dust is most prevailing.
In the context of internal combustion engine, it increases airflow hence increasing power, therefore most suitable for motor sports racing environment or clean city environment. However, it is not too suitable for long distance off-road motorsports where dirt and dust is most prevailing.