Originally Posted by DJ Apex
so how much surface area of the stock euro drop in filters are?
What are its dimemsions? The flat drop-in is about 60 square inches by my estimation.
I was so close with the P4 but that stupid ridge (you know what I am talking about
) in the airbox got in the way. The thing is, that ridge has no purpose in there that I could see. The P4 has more than 110 square inches of surface.