I'd hate to interject some seriousness at this point but I agree and disagree with you. Yes, and mostly in larger engines, the trend I'd moving away from K&N due to the ineffectiveness of fine particle filtration. Kind of makes sense with larger engines as ring seal becomes a bigger issue as bores get larger. With saws? I'm not so sure it's as critical. Usually bores are killed by other means then bad filtration. Saws used to even come with simular filters anyway, just not in that shape. A K&N would probably be more beneficial then an undersized stock filter once it's flow is compromised in terms of how clean the air charge is, where the air is finding alternate routes to enter.