intake?
Fleet Mechanic
Joined: Nov 2008
Posts: 1,573
Likes: 4
From: Seattle
Here's a few threads on the subject starting with the most recent:
https://www.ford-trucks.com/forums/1...-question.html
https://www.ford-trucks.com/forums/1...-good-for.html
https://www.ford-trucks.com/forums/1...ir-filter.html
https://www.ford-trucks.com/forums/1...for-7-3-a.html
My stock set up had a slightly warped cover which prevented it from sealing 100%, allowing dust into the intake past the filter. (You could barely see the warp, but you could draw your finger along the inside of the box and feel the dust). I replaced that with a 6637. Cheap, easy to fit, and great filtration, as confirmed by Blackstone OA's and spotlessly clean intake tube. I got tired of the noise though, and also wanted something more 'finished' looking so I now have an S&B with the washable filter. Extremely happy with this set up. Great fit and finish, and very good filtration.
https://www.ford-trucks.com/forums/1...-question.html
https://www.ford-trucks.com/forums/1...-good-for.html
https://www.ford-trucks.com/forums/1...ir-filter.html
https://www.ford-trucks.com/forums/1...for-7-3-a.html
My stock set up had a slightly warped cover which prevented it from sealing 100%, allowing dust into the intake past the filter. (You could barely see the warp, but you could draw your finger along the inside of the box and feel the dust). I replaced that with a 6637. Cheap, easy to fit, and great filtration, as confirmed by Blackstone OA's and spotlessly clean intake tube. I got tired of the noise though, and also wanted something more 'finished' looking so I now have an S&B with the washable filter. Extremely happy with this set up. Great fit and finish, and very good filtration.
Posting Guru
Joined: Jan 2013
Posts: 2,215
Likes: 2
From: North Lake Tahoe
I just installed the 6637 as it is a little noisy which doesn't bother me one bit as I love to hear the sound over my radio. So far it has worked well for me and am loving it. I had the K&N before and not such a fan as it sucked a rock and destroyed my turbo, but thats just my thoughts.
9 ECHO 1
Joined: Aug 2009
Posts: 12,467
Likes: 58
From: Missouri
There is no best.
6637
Pros: budget, easy, good filter life
Cons: loud, untested in a laboratory setting for your motor.
AIS
Pros: long filter life, great filtering, approved by Ford.
Con's: Availability, price
If you want big power look I TO S&B
Sent from my Galaxy S4
6637
Pros: budget, easy, good filter life
Cons: loud, untested in a laboratory setting for your motor.
AIS
Pros: long filter life, great filtering, approved by Ford.
Con's: Availability, price
If you want big power look I TO S&B
Sent from my Galaxy S4
Trending Topics
Senior User
Joined: Oct 2013
Posts: 102
Likes: 0
x100 on the 6637. Yea it whistles good but I like that on my truck. Basically price of the filter and a section of exhaust pipe and remove your airbox/battery tray and yer done. I heard good things on the s&b stuff.
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Senior User
Joined: Sep 2013
Posts: 498
Likes: 0
From: Hagerstown, MD
The 6637 is easily the best bang for your buck. I like the sounds coming from the turbo with the filter installed, that's for sure. However, I might soon change over to the AIS. I miss the protection of a sealed air box, and the fact that it's Ford-approved bodes well for my over-anxiety.
Price is holding me back a bit at this point.
Price is holding me back a bit at this point.
Thread Starter
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Junior User
Joined: Jul 2013
Posts: 81
Likes: 0
Ok guys im getting a lot of positive feed back from the 6637 so I think im going to go with it!
Riffraff Diesel: RDP 6637 Filter Kit
Is this it here?
Riffraff Diesel: RDP 6637 Filter Kit
Is this it here?
Thread Starter
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Junior User
Joined: Jul 2013
Posts: 81
Likes: 0
Yeam I'm going to go with this kit from RiffRaff. Thanks again guys! Hopefully ahe is LOUD lol
Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
You'll think someone trapped Darth Vader under your hood. It's not stupid loud, you just hear a lot more stuff.
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dzzavid
1999 - 2003 7.3L Power Stroke Diesel
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Dec 24, 2007 07:34 AM