Although with everyone's input on the subject... which I can agree with for the most part... my only question I suppose would be this.
If (1), let's just say HD Heavy Breather, works using a single element... wouldn't having (2) elements in similar design only restrict the incoming air? I mean, yeah, they're smaller per element, and they collect at a central point before entering the intake... but I would tend to think the smaller elements are also more tightly wound therefore restricting the intake volume.
It has been mentioned, and I often have to explain to my youngest... just because it looks "cool" doesn't necessarily mean that it's going to perform as claimed by advertising.
I still lean toward the theory of having (2) filter elements would restrict the airflow vs. a single element of similar design... but without the numbers, I'm probably completely wrong... as I've been before.
