Yes, that was true, regarding some Testastretta engines. We actually got a notice from Ducati on it a few years ago saying that we should avoid using that filter. I don't know if it went to everyone, but they know we build a lot of race bikes so we got it. It wasn't an "official" communication. I don't think it was a "Install this filter and the engine will blow" type of thing, it was more like they had several engine failures on race bikes and the common thread between them was they all had K&N filters on them, so to be on the safe side they were recommending avoiding them. Maybe K&N has changed the filter design since then?OK - I need someone to report experience with them on the 1199. I've heard from a respectable race tuner that a while back K&N oil filters had a bad rap because they caused oil pressure to be higher since the filter media was "better filtering" which equated to less flow. It caused some engine failures that he saw with his own eyes.
Not that is what I've heard from a reputable source. Maybe this was propaganda started by OEMs who wanted you to use their high-profit margin parts, I don't know but figure its worth sharing.