Here's the interesting part,
AFE is 4layer cotton gauze, not 3 like K&N! That means even better filtration and still able to gain increased cfm flow...
No PUN intended to Foam! I've got one on my 85 Mustang GT (Amsoil) and I previously had a Roar Filter on my SVT, though I currently use the AFE, so it's not that there all bad but from what I know Cotton Gauze has got a definate edge. IMO
