I'm looking to put a ram or cold air intake on the new truck, and I've narrowed it down between the K&N 57 series and the Ingen PF series. from what I've been reading the K&N is more of a Ram air design whereas the Ingen is an actual cold air design. The Ingen is a little more expensive at about $300 but it seems legit. I'm curious if anyone has any experience on either setup and what you think of them.