Air intake systems
Logistics Pro
Joined: Oct 2004
Posts: 4,738
Likes: 103
From: FL
Originally Posted by Kwikkordead
Here's what I did:
https://www.ford-trucks.com/forums/s...d.php?t=277571
https://www.ford-trucks.com/forums/s...d.php?t=277571
Logistics Pro
Joined: Oct 2004
Posts: 4,738
Likes: 103
From: FL
thanks..... i think i'm going to NAPA later to pick one up...... hum.... They probably won't have one in stock.....maby i should call..... na... rather use this as another excuse to go for a drive!!! thanks kwikk.... i'll let u know how it works!
Logistics Pro
Joined: Oct 2004
Posts: 4,738
Likes: 103
From: FL
Originally Posted by MobeyDick
Stock will work fine on almost all setups!! You have to be pulling about 1,200 CFMs to need more than what come stock!!
Posting Guru
Joined: Mar 2003
Posts: 1,521
Likes: 0
The stock box will pull huge amounts of air. The pipes going into and out of the intercoller will only Pull or Push "Flow" so much through them!! If you don't change them a bigger filter or fitler box is not going to change much!!
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
We've talked about the filters ability to flow before.
https://www.ford-trucks.com/forums/s...d.php?t=307700
https://www.ford-trucks.com/forums/s...d.php?t=307700
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Senior User
Joined: Jun 2003
Posts: 141
Likes: 0
From: Midwest in Harry's Town
I have a F250 2002 SD PS 7.3 that is still in warrenty. So I installed Ford severe duty AIS and found it to have a air flow problem. Then I got to looking on this site and found where someone had done some testing and found the problem to be the air box not the filter. So they cut a hole in the side of the air box (the air is still filtered) next to the fender and let in cool air. It works well and doesn't hurt the warrenty..
Post Fiend
Joined: Feb 2002
Posts: 10,600
Likes: 3
From: Carhenge
I can see the ol' butt dyno has been getting quite a workout here. The performance differences that are "felt" after the installation of a new intake system are most likely to be coming through your eardrums, since it has been pretty well documented by several posters here (on a real dyno instead of the butt dyno) that while you may change where in the band peak hp occurs, you are going to get very minimal to no performance increase with a different intake, other than more noise.
Here's the latest thread on the subject:
https://www.ford-trucks.com/forums/s...d.php?t=311373
So the primary benefits of a different intake are cooler exhaust temps (which will allow you to run other products that do increase performance) and better filtration. If an aftermarket system does not offer superior filtration, it should not in my opinion even be considered. Since lower exhaust temperatures is the only other primary benefits of a intake, it seems counterintuitive to install a system that increased the potential of ingesting heated air.
Here's the latest thread on the subject:
https://www.ford-trucks.com/forums/s...d.php?t=311373
So the primary benefits of a different intake are cooler exhaust temps (which will allow you to run other products that do increase performance) and better filtration. If an aftermarket system does not offer superior filtration, it should not in my opinion even be considered. Since lower exhaust temperatures is the only other primary benefits of a intake, it seems counterintuitive to install a system that increased the potential of ingesting heated air.
Elder User
Joined: Dec 2001
Posts: 582
Likes: 5
From: Kelowna B.C.
I did kwiks napa setup and love it. The thing that made me want it is to get rid of the dusting issue the stock box has. I'd rather have it breath a little warmer air than dust. And yes the dusting issue is real. Your stock box may seal great now but the one time it doesn't ( there a lots of documented cases of this) your stroke is in for a world of hurt. Choose what ever setup you like but get rid of the stock box. Very cheap insurance! 
Joined: Dec 2004
Posts: 120
Likes: 0
Originally Posted by eckart
I did kwiks napa setup and love it. The thing that made me want it is to get rid of the dusting issue the stock box has. I'd rather have it breath a little warmer air than dust. And yes the dusting issue is real. Your stock box may seal great now but the one time it doesn't ( there a lots of documented cases of this) your stroke is in for a world of hurt. Choose what ever setup you like but get rid of the stock box. Very cheap insurance!
In any case, its best to get a round filter that clamps to the inatke hose to the turbo and elimintae any guess work. Make sure when you do so to minimize the amount of hot air from the engine coming to the filter so you can gain lower EGT's. These engine get very hot, and living in a climate like mine, every deg drop I can get helps my EGT's.
The bigger surface area of any of these filters is a plus over the stock setup. The FORD AIS is a really nice system, though I question the cost of the replacement filter, as it is a little too high. The AFE Stage II seems to be the best out there, from filterartion and cold air setup, although the initial cost is high.
Elder User
Joined: May 2004
Posts: 637
Likes: 0
From: Forest Hill, MD
Kc2006, in an earlier post you said the K&N will "clean better and flow better" then the Tymar. Not exactly true. The K&N may flow a bit more depending on the size of the filter used, but it will most certainly not filter better then a Tymar. Hey , Mobey while your telling everyone how we don't need intakes because the stock box is so great, why don't you tell us how great the Tornado is too. Still waiting for the data.
Posting Guru
Joined: Mar 2003
Posts: 1,521
Likes: 0
I heard that trash talk about the lid not seating properly in another thread!! I told them that if they had problems I think it must have been opperator error!! I was told to do the white glove test on mine and I would see the dirt in my intake system!! Well I did do the white glove test but I used a white paper towl. Well the results were as I expected after 185,000 miles there was just enough dust (if you could call it that) to see. but that was after I rubbed the whole inside of the lid and the tube!! I know now it was opperator error
Last edited by MobeyDick; Dec 20, 2004 at 03:29 PM.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
I need to chime in here about the poor sealing of the factory air box. Mine had one broken tab on it, it still managed to seal up ok as I found the inside of the air boot was clean. But the design of the factory air box is, to put it nicely, designed by Scrooge himself. Cheap and thin where the tabs go. I couldn't wait to get it out of there when I found out how well the NAPA filter fits and seals.
Later on when I put on my Wicked Wheel I found one blade of the impeller had a nick in it like a grain of sand had made it through. Now I am positive of the filters ability to do it's job and no worries.
Later on when I put on my Wicked Wheel I found one blade of the impeller had a nick in it like a grain of sand had made it through. Now I am positive of the filters ability to do it's job and no worries.