We are in the midst of testing at the moment...
We will be offering a system that will have a dual configuration option
One for around town, and one for off road..
We have listed some interesting studys below...
There is a good youtube video were they present the information quite well....
Although this is primarily about cold air intakes, the information in regards standard air filters is relevant to what we are doing.
https://www.youtube.com/watch?v=NHHdApd_kJk
https://www.project200.com.au/dm-iso5011/#google_vignette-
https://www.sciencedirect.com/science/article/pii/S2212017316301475
https://www.youtube.com/watch?v=0flEIBOTYrE