Does the Mod work on the good ol' 4.6?

There is a similar mod for the4.6L. Just replace the restrictive tip that goes into the fender with a piece of ABS or PVC pipe. Search for the Gotts mod.

I think they also need to remove the silencer which is inside the air tube.

Performed this mod on my truck today, I think i did a horrible paint job but its done. Pics are in my gallery for all to see. I do notice a difference seems a little more peppy on take off and acceleration. Now its time for a new air filter, K&N or AEM.

HI all :Just bought all the piece's but didnt get to install yet very windy today. can't wait to try it out!

I did this mod about 2 weeks ago, had to use PVC instead of ABS pipe (black ABS is impossible to find around here) and instead of painting it I wrapped it with electrical tape, for some reason I think that paint would just flake off after a couple of months. Looks good enough to me.

It's amazing that the 3" pipe fits almost perfectly inside the bellows on the stock intake, almost like it was make to fit the 3" pipe.

When I first put it on, the downspout adapter seemed like it wouldn't hold inside the fender wall hole, even with the bellows compressed, but it hasn't popped out yet. Must not be enough vibration in there to jar it loose.

My painting skills suck, BUT it serves its purpose. The connector into the fender seems very loose, but has not come out yet on me either. Good inexpensive mod. :D

Downspout problem
 

Just an FYI to all those who have done this mod...check your downspout rubber adapter.

On a recent trip doing a lot of mountain towing, I did a routine engine check during a gas stop. I noticed the plastic air intake tube going to the fender was loose. Low and behold the downspout rubber end that goes in to the fender hole had sucked itself backwards in to the tube. It didn't come off the tube or anything but there was definitely both a restriction and engine compartment air getting sucked in to the engine.

Unfortunately I didn't get a pic but I did solve the problem by inserting a 3" OD plastic fitting with an 1/8" shoulder on it in to the downspout end. This prevents the end from collapsing. Best I can describe the fitting (I had it laying around on a shelf in the garage) is and EMT type collar, you know, the gray colored stuff used to run electrical underground. Should be able to find a 3" OD one at Lowes or Home Depot.

Some may not have this problem but those who tow and are at wide open throttle for a lengthy period of time may have this happen so beware!

Has anyone been able to find a downspout connector at Home Depot? The closest Lowes is over 40 miles away from where I live but there is a Home Depot down the street. So if I could it would nice not to have to make the trip.

New member, first post. Bought an '06 four months ago and I will slowly make some changes as money and time permit. It is completely stock. Did this intake mod last weekend and it was very easy. Cost less than $10 for all of the parts from Lowes. Disconnected battery while making changes. Afterwards, the engine ran bad for two days. I guess the PCM needed to learn again. Now, it is running like before but I cannot say I notice improvement. The throttle response still lags and the performance is not what I would expect from a 5.4. Thanks.

How long does it take for the PCM to get used to the new air flow?

You need a tuner.

It takes several driving cycles unless you clear it by disconnecting the battery. I disconneted teh battery while I did th mod. Leave it disconnected 20 to 30 minutes and turn the lights on.

How could it possibly cause any engine trouble by running lean? This mod comes in before the MAF sensor? The MAF tells the injection how much air is getting through which in turn sets the air / fuel mixture...

What I want to know is how much flow can a 3" ID pipe flow uncompressed? I would imagine the larger the pipe the better, Or at least eliminating any bends, or rough surfaces on the inside of the pipe would be best...

I did this to my truck yesterday. I already had the drop-in K&N in there but this DWV mod made it more breathable. Thanks for the info.