Well I seem to have only stumped you with the question as both the other guys answered it. But no worries it makes complete sense to me that since the majority of filters use conventional cellulose filtration fibers where the spaces allow larger particles to pass through to the engine while the RP one uses the latest technology filtration system which filters out particles as small as 25mc...
As wonderful as that may sound it just means that it could slow down the flow of the oil but like Poodles pointed out the bypass valve and their filter element is intended to keep flow going.
And it was Kracin and you that had started talking about filters. You claimed that the Denso's were hard to come by so Jeff Lange was nice enough to point out that the JDM Denso's are all he uses in his Supra and that there are thousands available in the US.
Oh and I did reread my post about the RP filter and the Denso and it made complete sense to me as it obviously did to Poodles and Rayall but I guess it's easier to point the finger of blame than to just admit one may have been wrong in their interpretation. I guess the martial arts taught me that. And I did apologize to Jeff for misstating my filter brand as HKS when it was K&N... had you read that post you would have seen it. I didn't bother to answer post#25 since you obviously went in the wrong direction there and needed to reread before answering so I didn't bother replying to it since my time is valuable too and like you I drop em like hot potatoes if they show lack of intellect. Hey I think I understand what Supracentral meant in your sig about the Supra owner being the weaklink.
Maybe my mechanic doesn't know as much as some self proclaimed experts on here do about oil and filters but he sure knows how to turn an NA into a NAT that runs the 1/4 mile in well under 12 and dynos at well over 400 which was his first Supra project until he sold it and has moved on to his 2nd which is another MK3 that he is planning on taking up to 900 hp and around 10 seconds. As for the chemical techie stuff we can always turn to the lab rats and nerds who eat, breath, and sleep that scientific mumbo jumbo...and thank you for your kind words.
http://www.royalpurple.com/rp-oil-filter.html