thats what ive heard also, i know on powerstroke they have been responsible for dusting turbos and engines
since not many of yous!!! have been on the site most of us came from--the horror stories of k&n's over there--would scare the beejebus out of you!!!! the actual flow diff between a new k&n,,and a new paper air filter--is actually less,,than 1%!!! think its worth it????? this by a independent test lab--NOT K&N's!!!!!!!!!!!!!!!!!!!!!!!! what brand do you think dusted my perfectly good turbo idi????????? go ahead and run one---------