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Do It Yourself Intake Modification for 2004-2008

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  #16  
Old 03-31-2009, 08:11 PM
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laraboy, ford put those baffles so you would not get a drone or buzz on high intakes such as starting off or passing some one and thats the only reason i have found that you need them ? as for the sound i don't notice it with duel exhaust and 200Watts of stereo so its not a prob for me!
 
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  #17  
Old 04-27-2009, 03:06 PM
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If you want to get this done a littler quicker I'd suggest using 3" PVC sewer pipe. It's thin wall requires no grinding and slips easily into the fender hole!!!

http://images.lowes.com/product/721957/721957105135.jpg
 
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  #18  
Old 05-03-2009, 07:44 PM
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Just got done doing this yesterday and I can tell a difference in acceleration.

One problem I had was it was taking forever to sand the pipe down to make it fit just right. So I used a table saw to run the pipe along side of to get it down to size more quickly.
 
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  #19  
Old 05-04-2009, 09:01 PM
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Originally Posted by QuickSilver150 View Post
If you want to get this done a littler quicker I'd suggest using 3" PVC sewer pipe. It's thin wall requires no grinding and slips easily into the fender hole!!!

http://images.lowes.com/product/721957/721957105135.jpg
Did you notice a difference and does the tube come out of the fender hole at all?
 
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  #20  
Old 05-04-2009, 09:16 PM
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I did this variation so I did not have to shape the tube. Works great.

https://www.f150online.com/forums/ar...4l-engine.html
 
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  #21  
Old 05-12-2009, 12:18 PM
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I am thinking about trying this but would like to know the gain for the pain ( what am i getting from it) I am also thinkin maybe Clean the MAFS but not sure what that will get me any help? thanks
 
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  #22  
Old 05-12-2009, 03:24 PM
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Thanks, I finally went out and bought the materials....

JackandJanet,

Thanks, I went out today after work and picked up all the materials at my local Home Depot. Totaled just over $12.00 (spray paint, strap, and pipe)

I will take some pictures of the install and let ya know how it runs tonight when I run back into town.

Thank you for this article

 
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  #23  
Old 05-13-2009, 03:16 PM
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here are some pics

I did it! here are the pictures... I definitely notice WOT difference...



 

Last edited by 07hamline150; 05-13-2009 at 03:20 PM.
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  #24  
Old 05-13-2009, 04:21 PM
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I'll think I'll try this on my 4.6. I'll try to get the parts tonight and tackle this project tomorrow. I'll let yall know how it comes out.
 
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  #25  
Old 05-13-2009, 06:20 PM
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Unhappy Might wanna re-think that...

Originally Posted by Bluejay View Post
I did this variation so I did not have to shape the tube. Works great.

https://www.f150online.com/forums/ar...4l-engine.html
Everyone who modded that way is starting to rethink it.

From the very same thread you posted: DWV Intake Mod for 2004-2008 F150 with 5.4L Engine Post #53

"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."

There's either another thread here or over on the PHP forums showing the 3" section of the adapted sucked into itself.

It was a good idea, but that rubber was way too flimsy considering the volume of air going across it. The airflow would be constantly trying to collapse it due to the change in direction of airflow.
 
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  #26  
Old 05-15-2009, 07:50 PM
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Do you guys think using 3" aluminum dryer vent hose would work the same way? Just wondering...
 
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  #27  
Old 05-15-2009, 10:00 PM
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Originally Posted by Sooowee View Post
Do you guys think using 3" aluminum dryer vent hose would work the same way? Just wondering...
I think dryer vent hose/tubing would probably heat soak too easily. It's also pretty delicate stuff. We used some for one of our older fire trucks to run a CAI because the truck always had issues once it got hot. (Really, who was the freakin' GENIUS that ordered a 2.5 ton 6X6 brush truck with a GAS engine?!?!) Granted the tubing on our truck is run longer than on a F150 but it's easily susceptible to dents, tearing, crushing...

You would have to use a piece of pipe & clamp inside the bellows and then tape the dryer hose/tubing to it, unless you're referring to rigid duct work. That would probably work, but still heat soak more easily than PVC/ABS and likely transfer some of that heat to your intake charge.
 
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  #28  
Old 05-15-2009, 11:33 PM
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I was a bit worried about the "softness" of the downspout adapter when I saw that approach. Looks like it could be a serious problem. ABS or PVC will not have this issue and either should work well.

I suspect, actually, that the aluminum flex tube mentioned would also work, if the outside diameter fits flush with the fender opening. It's really a pretty short piece, and there's very little stress on it (other than a bit of "suction effect" at the intake. Because it's so short, heat soaking should not be much of a problem.

Nice job, 07hamline150

- Jack
 

Last edited by JackandJanet; 05-15-2009 at 11:37 PM. Reason: Added clarification about aluminum flex tubing
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  #29  
Old 05-16-2009, 01:39 AM
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Well, I tried the dryer hose....and, it fits perfectly, both in the fender and directly in the plastic portion of the intake tube. I cut the tubing so that it fit tightly between the intake and the fender. The tubing has enough "give" to it so that it won't crush nor will it pull out of the fender. The tubing I'm using is not the mylar covered spring hose, but the aluminum "armadillo" looking hose (for lack of a better description).

Yeah, I'm concerned about heat-soak, but it's a super-cheap mod that's easily reversible. I can't say I noticed any difference after driving around though.....I took a few on-ramps at full-throttle, no difference to me.
 
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  #30  
Old 05-16-2009, 11:23 AM
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hay why not pick up some 10mill tape and coat the tube this will get rid of any heat soak in that short of a piece and was looking at that my self why not take the tube right out the front for true ram air? any one with thoughts on this let me know and ill give it a try post my findings latter!
 
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