Dont have any before and after dyno comparisons etc. It is basically a 14" base with 3" cotton gauze element similar to K&N material. I am sure Airaid will also tell you they should flow as well as K&N. Here are some comparisons:
K&N E-1650 14x3 Cotton 835 CFM 97.1% 126
AIS Cotton AF3C 14x3 Cotton 830 CFM 96.5% 121
AIS Cotton AF3C-2 14x3 Cotton/Synt 830 CFM 96.5% 130
FRAM FRM4 14x3 Paper 791 CFM 91.9% 128
Moroso 97080 14x3 Paper 776 CFM 90.2% 131
Amsoil 52 14x3 Foam 774 CFM 90% 140
So I would believe it flows around 800CFM since the taper reduces the total surface area a bit, but not much since the filter area is wider than 3" since it slopes inward, still keeping the 3" height from base to top. Inside it has 4 vertical vanes to stabilize and direct the incoming air. This is important to reduce turbulence and get maximum flow. To get this type of flow under a Cobra hood is pretty good.
Anyway, this is the only one I could find that flows well and would clear, and that was with trimming the base. I am pleased with the quality of the Airaids.