Have seen more than a few sanded engines when using those wonder filters. The best example I personably know about, a retired MD with a 4104 with the upgrade to the 8V-71 & V730, nicely done etc. Our shop changed the air filter system from the oil bath to a large paper cartridge type, The next time he came by for a PM, check out & find why little hard starting, loss of sone power and increased oil useage, OK, found a K&N in place of the paper air filter, yes a great example of "Dusted", asked WHY the change to the K&N, he said that paper filter got stopped up too quick and the K&N NEVER gets stopped up.
OK, 8 cylinder kits, roots blower & Gasket set later, out the door.
Guess being a retired MD provides plenty money to cover his brilliant dumb ass moves.
Foretravel, 2001, 36' ISM500 "Hot Rod"
F150 w/EZ Golf Cart or
CanAM 800 Max Limited ATV