in a modern engine, the surface area of oem paper filter has been designed to provide optimum airflow at wot even when moderately dirty. by adding a less restrictive filter or having no filter at all does nothing to improve performance. most n/a bolt-on mods on the market don't increase significant airflow requirement to make oem filter a bottleneck.
Thanks for the clip, despite the fact that it is not fully controlled test results still show big time the myth over these after market air filters.
Obsedian.
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