Well I kind of did the DWV intake. I couldn't find any black DWV so I had to use white PVC and primered and painted it black. I didn't use any of the giant rubber adapters but I did use one of the hose clamps to secure it to the stock inlet tube. I used a rust removal disc on my electric drill to sand down 3 inches of the PVC so that it fits inside the fender opening. It's very snug in there so that it won't pull out or rattle. I've had it in for 2 weeks now. Between stock and DWV/K&N filter it's a night and day difference. I barely touch the gas at all now to stay at 55mph. I also went from 12.9MPG average to 15.5MPG on this last tank and I was less gentle with this tank than most. I have to say I was more than impressed with the operational results of this.

 

i am really considering doing this, is it simple enough to do?

 

It's really simple to do. Here are the steps.

1. Get a 3" PVC Pipe - 11" Length
2. Get a hose clamp that will fit around the stock intake pipe.
3. Sand a ring on one end of the pipe and test fit into the fender. I sanded mine so that the 3" of the pipe fit into the fender well.
4. Rough up the pipe and primer/paint it the color of your choice.
5. Insert PVC into stock pipe and then wiggle into place in the fender.

I think all in all with me being a perfectionist and not wanting it to wiggle it took me 30 minutes. I'd recommend using a power sanding utensil otherwise I could see carpal tunnel syndrome in your future or tennis elbow.

 

I push mine in the hole then give it a few weeks and it starts rattling again....gotta find a solution to this one....

 

Great work on the mod. This is almost a must-do for any of these suffocating F-150's.

On my 4.6, I went a slightly different route, and used 3" aluminum piping, with a 3.5" -> 3" 'hump' reducer, on my airbox. Slight modification to the stock rubber isolator ring, and the 3" pipe fit inside. No rattles, all fun.

You 5.4 guys would probably be able to use a slip in 3.5 -> 3" reducer (goes inside your stock pipe end), and then run a 3" aluminum pipe into the fender. You get the same diameter of pipe, internally, but none of the fender hole fitment issues. I found a good source of parts at airflo.com. They cater a lot to semi trucks, but have a good amount of smaller parts and fittings, including aluminum piping.

Here's a pic of the end of my setup, for reference.

 

im completely stock. Getting around 16.8 city. If i do something like this or even a relocation filter intake will my mpg increase? 17.5 or 18 city?

 

While no one can garantee exact mileage increases, you can expect an some, as the engine is getting cooler air, which translates to more power with less work.

For the cost of this mod, you can't go wrong. Very sharp, clean, and easy to do. Puts money in your pocket for other mods!

 

Honestly I was very surprised with my gains. I wasn't expecting that amount at all but I didn't really have anywhere to go but up from 12.9. I also think I'm going to do the dreaded plug swap over the the brisk single piece plugs. Anybody in MN have the tool they would want to loan out or help with .

 

I've been there and done this mod about 4 months ago. I'm calling BS on the 3MPG gain. If it really was that much better Ford would have designed it this way. I don't believe this no way no how.

 

Where in MN RicRok