I have seen several posts where people mention that that they have opened up the air box. How do you do this and if you do this and ad a k&n filter, will this take the place of a FIPK?
Thanks,
Brent

 

it will not take the place of an FIPK because the factory tubing is still there. the intake pipe on the FIPK's helps add power.

 

no , that is if it is a 97-02 . if it is a pre 97 yes since the FIPK's use the stock hoses .

 

I have seen people make a homemade FIPK. Using the stock tubing, they remove the outer box that goes to the fender wall. They cut out a circle of sheet metal that fits flat over the engine side of the filter housing, add a 360 degree filter and put on the factory filter housing clamp. The key here is the sheet metal circle that seals the opeing once the filter is put on.

 

i don't really see the point of making a pice of sheet metal to seal it up,other than being able to keep the stock filter housing intact,i have an fipk and it makes alot of noise,and for a while i got tired of it so i put the stock filter housing overf the filter and cut the end out to fit over the longer filter that came with the fipk,so you could just do that rather than cutting a piece of sheet metal.that way you know it'll fit cause it's the original housing,either way would work just as good,just thought i'd throw in a suggestion

 

Well, the upside to removing the airbox is that it doesn't have to breathe as hard for air. Sure, it's all underhood (hot) air, so there isn't as much benefit as a colder air intake, but still more air is better than a little air, and it makes a little bit of a difference, anyway, at least by my 'seat-o`-the-pants meter'.

 

the posted gains by www.truckperformance.com were lower for the Volant cold-air intake compared to the Air Force 1 (which I'm looking in to getting). Now, I'm not sure about these numbers, I think they're not accurate at all. The cold-air would just be better any way you look at it, as long as there was a big enough intake (which I think is fine). I'm wondering whether to stick with the AF1 or go for the Volant cold-air. Ideas?

 

fab your own cold air intake as i have .

 

I have some pics of the Air box mods. Check out my gallery

www.f150world.com/kiemco

 

bad link...