5.4 L cold air intake
To my knowledge it would probably be the AF1 CAI ( $300 ) with a Troyer tune. The AF1s are very popular and the prices for them has recently increased due to high demand, so they obviously work well.
Im going to get S&B intake because the price is right. Im not gonna spend a extra $100 for 4 hp. And im def. Considering differen't costum tunes, I keep telling my self that im getting both for gas milage. But mostly performance : )



