Yeah this is hard for me IMO to dismiss some claims because of his experience and why would he compromise his character and integrity
1. in dustier conditions K&N held up loss no power in comparison to paper filters that clogged
2. K&N cellulose is an active filter with 4 to 6 layers sweeping back and forth to trap the dirt
- The filter box does vibrate it sounds plausible but more evidence required to substantiate effectiveness
3. Infers the oil will bind the micron particles and hold onto these until the filter is cleaned
- the dust particles drop out on the inlet side of the filter and cannot past due to the sweeping fibres effect
4. Smearing of oil on the inside of the filter with his initials and no dust on his initials
- This means no microscopic particles got through based on his visual inspection
Maybe K&N should develop the active filter ISO 5011 version test to measure and validate the claims made by David V.