Most assertions here are wrong or exagerated, it's sad to say!!!
AFE 14" Round 3" tall Filter tested at 1.5" H20 830 cfm compared to the same sized Foam Filter which will remain anonymous flowed only 423 cfm. Another problem with Foam is they lack the ability to Straighten the airflow decreasing the amount of Turbulence entering the air stream. One noticeable problem with Foam Filters is the oil doesn't hold well with the Foam and therein having a tendency to settle with gravity or get released into the airstream.
The thing that amazes me is the claim that Foam Filters filter better, I don't think so!!! I've been through Foam Filters, including both Amsoil and Roar Foam Filters and I can tell you from experience alone they don't filter better, but I'll leave the proof to those that test'em. Comparing my Roar Foam Filter to my current AFE Filter, which by the way I sell, I was shocked at the results. Not only did the AFE boost airflow as shown by the SAFC, my intact tract and MAF never show signs of dirt whatsoever. Unfortunately I can't say that for the Foam Filter which some of you claim superior.
