Not trying to step on any toes or get into a fight here....
I understand all the reasoning behind the OEM filters....
but as an example:look at 'most' of the 20v toyota guys running g open throttles.
Oldschool side draught carbs
perhaps your OEM filters do work better....but surely with regular servicing using decent fluids... One shouldn't have any issues.
I had a corsa bakkie that saw the redline day in day out. K&N drop in filter for ~50k km...never oiled it once and that bitch never smoked a day in its life with me.
Why would the brand K&N(air filter) be so widely accepted as "good"....If it didn't do its job?