LoL, he did not do any testing that proved his theory that intake pulsations make K&N air filters "way more efficient" when used on an engine vs tested per ISO 5011.
You obviously either did not watch the whole video, or didn't comprehended what he said. Tell me exactly where in that video where he talks about the proof of his "pulsations claim" that was proven with test data. There is absolutely ZERO proof.
ISO 5011 testing is not a "theory", it's controlled testing with actual measured data. All he had were just "theories" with ZERO test data to prove anything related the "pulsation" efficiency. He thinks PF's testing is valid data, which also makes him look less credible too that he knows much if anything about filter efficiency or the ISO test standard. He knows flow vs dP on a flow bench (with smooth flow, not "pulsations"), but seems that's about it.