He just proved that more air passed the elements. On the other video he showed that the dust particles did not passed the filter by putting it over the filter and slowly tap it to a paper. but I'm not sure if this is installed on a turbo engine will be a concern.
Nice video, I am planning to upgrade to JBL , one concern, how to put video on the stock radio screen of the toyota raize ? how did you do it ? thought USB? video format? thanks you very much in advance