I have had both the K&N and the Amsoil and noticed vertually no difference. I like the cone style filter from K&N though that CSCpusher has it looks trick and apparently work that way to.
If I could afford it, I would really like to have the air bulldog hood with there system, I heard that you gain like 4psi.
If I could afford it, I would really like to have the air bulldog hood with there system, I heard that you gain like 4psi.