i apologise if this question has been asked before but being relativley new to this site here we go !
i,ve got an 05 999s which comes with half system and ecu as we all know , to get the full potential from my pipe obviously you need the correct air flow (right so far i hope ) a pc3 is goin on after xmas (thanx santa) . now i view ebay quite a bit , and have seen a few systems sold lately , a couple of which show wot look like to me standard filters (pic attached ) an not the ones in dpc catalogue . to the point wot filters come with termi kits !!
(i think people tell fibs on ebay me )