DWV intake mod for 2004-2008 F150 with 5.4L engine

Thread Tools
 
Search this Thread
 
  #91  
Old 04-14-2009 | 02:00 PM
blk450er's Avatar
Senior Member
Joined: Feb 2007
Posts: 381
Likes: 0
From: Southwest, MI
Just did this to my truck a week ago. Noticed a slight throttle response and that's about it.

 
  #92  
Old 04-19-2009 | 12:07 AM
BlkStang's Avatar
Senior Member
Joined: Mar 2003
Posts: 241
Likes: 0
From: Plattsburgh, NY...BFE
I have an AEM intake now and might stick the stock one back on and try this mod. It was on the truck when I just bought it but too noisy for me.

Removing the "baffles" as some call them really is not going to gain anything. They are actually called Helmholtz resonators, and in fact do a serve a purpose in the tuning of the stock intake. They are not just silencers as alot of people think.

http://www.dinamoto.it/DINAMOTO/on-l...suonatore.html
 
  #93  
Old 04-20-2009 | 03:57 PM
firemedic2714's Avatar
Member
Joined: Mar 2009
Posts: 85
Likes: 0
From: Suburb of St.Louis, Missouri
Very simple mod. I haven't noticed any difference yet because I haven't really raced the engine. I did it because, to me, it just logically and mechanically makes sense (my neighbor is an aerodynamics engineer for Boeing and agrees) and it's too cheap to do ($10.00 and an hour of labor). I haven't noticed any whistling, but just before I glued it together, I rounded all the 90 degree corners in the path of incoming air with my Dremel tool and before I paint it, I'm going to smooth all the joints with some silicone. Even if I didn't know about the dyno testing results, I'd probably still do this.
 
  #94  
Old 04-21-2009 | 02:46 AM
mixedbreed's Avatar
Senior Member
Joined: Jul 2008
Posts: 995
Likes: 0
From: lost vegas
i just got back from a 1700 mile trip as i was doing my after trip PCC/PCI's i noticed the entire rubber piece that fits in the fender, had been sucked backwards into the tube, and was no longer in the fender. the edge told me i was getting 8 degree above ambient temp in the intake so i dont know when this happened. luckily it was suggested and i did glue the rubber piece on but i think i am going with Jack and janets molde solid piece tomorrow. too much worry aboutthat rubber piece getting breathed in to my 5.4 to keep it on there.
 
  #95  
Old 04-21-2009 | 08:09 AM
BrizzleOrizzle's Avatar
Senior Member
Joined: Apr 2009
Posts: 151
Likes: 0
From: Alabama
just did it to my 04.














 

Last edited by BrizzleOrizzle; 04-21-2009 at 04:31 PM.
  #96  
Old 04-21-2009 | 05:41 PM
kd4crs's Avatar
Thread Starter
|
Technical Article Contributor
Joined: Oct 2004
Posts: 2,551
Likes: 2
From: Central KY

Originally Posted by mixedbreed
i just got back from a 1700 mile trip as i was doing my after trip PCC/PCI's i noticed the entire rubber piece that fits in the fender, had been sucked backwards into the tube, and was no longer in the fender. the edge told me i was getting 8 degree above ambient temp in the intake so i dont know when this happened. luckily it was suggested and i did glue the rubber piece on but i think i am going with Jack and janets molde solid piece tomorrow. too much worry aboutthat rubber piece getting breathed in to my 5.4 to keep it on there.
Apparently some of the downspout connectors are more flexible than others. I have tried to push mine (I have 2 of them) inside and they won't stay that way, they pop back out. I am currently sourcing a rigid plastic PVC ring with a lip on it that will resolve this issue. Once I get it and test it I will publish the details. The solid PVC/ABS pipe ground down to fit is a good alternative.
 
  #97  
Old 04-21-2009 | 06:11 PM
Bluejay's Avatar
Global Moderator &
Senior Member
Joined: Mar 2005
Posts: 26,034
Likes: 70
From: Burleson/Athens/Brownsboro, TX
Originally Posted by kd4crs
Apparently some of the downspout connectors are more flexible than others. I have tried to push mine (I have 2 of them) inside and they won't stay that way, they pop back out. I am currently sourcing a rigid plastic PVC ring with a lip on it that will resolve this issue. Once I get it and test it I will publish the details. The solid PVC/ABS pipe ground down to fit is a good alternative.
I think you can eliminate the 4x3 downspout. I don't see why you cant uses a Pipe Hub Donut 3x3 part number 70389 at Lowes. I think it will go into the hole in the inner fender just fine and it is a tight fit on the 40 pvc. In fact, you do not need glue or a clamp.
 
__________________
Jim
  #98  
Old 04-21-2009 | 11:04 PM
kd4crs's Avatar
Thread Starter
|
Technical Article Contributor
Joined: Oct 2004
Posts: 2,551
Likes: 2
From: Central KY

Originally Posted by Bluejay
I think you can eliminate the 4x3 downspout. I don't see why you cant uses a Pipe Hub Donut 3x3 part number 70389 at Lowes. I think it will go into the hole in the inner fender just fine and it is a tight fit on the 40 pvc. In fact, you do not need glue or a clamp.
Thanks for the suggestion, I will check that out and see if it will work.
 
  #99  
Old 04-21-2009 | 11:45 PM
Bluejay's Avatar
Global Moderator &
Senior Member
Joined: Mar 2005
Posts: 26,034
Likes: 70
From: Burleson/Athens/Brownsboro, TX
Originally Posted by kd4crs
Thanks for the suggestion, I will check that out and see if it will work.
I bought that piece along with a downspout and used them both, but realized I could probably eliminated teh downspout.
 
__________________
Jim
  #100  
Old 04-24-2009 | 05:43 PM
ja0521's Avatar
Member
Joined: Jan 2009
Posts: 29
Likes: 0
From: ATL
Has anyone been able to find all the items they needed for this mod at Home Depot? The closest Lowes is 40 miles away and if I could save a trip it would be nice.
 
  #101  
Old 04-25-2009 | 12:43 AM
txarsoncop's Avatar
Senior Member
Joined: Mar 2007
Posts: 214
Likes: 0
From: Texas Baby!!
Back in post #82 I confirmed that both HD & Lowes carried the parts I used, "Uses a 2" test/knock out cap, a 1.5" test/knock out cap & a 1" plug."

If you actually read the whole thread the other posters covered who carries all the other variations. To save you the trouble however...

BOTH places are going to carry the sch 40 PVC plugs and/or caps if you want to go that route instead of the test caps. There is no need for sch 40 parts considering the construction of the rest of the intake though.

I will not be held liable if your HD/Lowes is currently out of stock of a required part.
 
  #102  
Old 04-25-2009 | 12:52 AM
txarsoncop's Avatar
Senior Member
Joined: Mar 2007
Posts: 214
Likes: 0
From: Texas Baby!!
Sorry to double post but this is actually a different aspect of the mod so I wanted to put it in a separate post.

I know it's somewhat taboo but you might want to check out what we've just started to discuss at another *ahem* forum. PHP
There's some debate as to whether or not the Helmholtz resonator chambers are just to tune out undesirable frequencies or if they're also there to assist with the combustion cycle. The science actually backs up the performance enhancer property, IN THEORY.

Short of "someone knowing someone" who actually knows something at Ford only a dyno test of the same engine between an intake with the resonator chamber and one w/o will tell the tale.
 
  #103  
Old 04-25-2009 | 01:04 AM
Bluejay's Avatar
Global Moderator &
Senior Member
Joined: Mar 2005
Posts: 26,034
Likes: 70
From: Burleson/Athens/Brownsboro, TX
I left the resonator on when I did the mod, and my truck is really running great. Drove it about 350 miles today and it was a pleasure to drive.
 
__________________
Jim
  #104  
Old 04-25-2009 | 02:36 AM
blueovelboy's Avatar
Senior Member
Joined: Nov 2008
Posts: 1,006
Likes: 0
From: willow glenn
txarsoncop hay i did dyno mine and found a 13 more on the horse well thats a improvement any way you slice it and sence i have put about 10000 miles and have checked it out not to long ago plugs are good and she is running great! so hope this helps
 
  #105  
Old 04-25-2009 | 11:00 AM
puddle jumper's Avatar
Senior Member
Joined: Jun 2007
Posts: 216
Likes: 0
From: KANSAS
i used a 4x3 rubber pvc connector into the fender wall
 


Quick Reply: DWV intake mod for 2004-2008 F150 with 5.4L engine



All times are GMT -4. The time now is 06:03 AM.