Originally Posted by dvpouldar26
Dry filters have a 99% filtration efficiency while oiled have a 98% filtration efficiency. This just means that the dry filter filters 1% better than oiled, but the oiled filter's airflow is like 30% better than the dry filter.
Also the dry doesn't require much maintenance. When it gets dirty, just tap/vaccuum the dirt off. When the oiled gets dirty, you must wash it in a soap solution, then reoil it.
But, IMO, if you're serious about perfomance (and I'm assuming you are since you want more airflow to your engine), then oiled is the smarter option.