so i have a 4.6L with a k&n airfilter still on the stock intake settup. my question is how much improvment would i see if i went with a whole new intake (any recomendations?)? would it be worth my money or is there that much of a difference?
im looking for speed, not pulling any trailors or anything.

 

I've heard that the AF1 at www.troyerperformance.com is the best intake for the F150. Check em' out!!!