So my question is simple, real but simple. What makes an air filter Hi Flow? Going stage one on my 17' SGS and looking at the options. I can replace just the element with a Hi Flow element from either Screaming Eagle or K&N. The elements look much like stock, even about the same size. So, what makes them Hi Flow?
What makes an air filter "Hi Flow"?
- Thread starter 09 Softail C
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They are usually an oiled gauze filter media that is more "open". They let in more air, but unfortunately, more dirt too. If you put on a larger oiled gauze filter element (like a K&N), the pressure drop and flow velocity through the filter will be less and you will recover some filtering efficiency to keep your engine clean inside.