Performance Car Air Filter Test
Green Cotton Air Filter Test
The Green Cotton filter is, as the name suggests, made from cotton gauze like the K&N and Jetex items. We were therefore expecting similar results as the medium used is also similar. In fact the Green Cotton outperformed the K&N, with a maximum pressure increase of 0.15kPa less than that of the K&N, and this seems to be due to its slightly larger size. The Green was also the only filter to feature the conical end designed to increase surface area, which may have contributed to its good airflow performance. In terms of filtration a cotton gauze filter is ideal to use even in very dusty condions, but as the tests show, is more restrictive than foam.
Restriction (KPA) 1.37
Contact: Green Cotton Air Filters