6637 intake
New User
Joined: May 2009
Posts: 8
Likes: 0
From: Joplin, MO
Great Deal for the Money
This is the first thing I did when I got my truck a few months ago. I definately would recommend it as I feel like the truck is breathing better. The only trouble I had was finding the 45 locally. Someone recommended that I try a big truck parts house, and they had it in stock. Just a suggestion if you want to chase down your own parts.
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
Assuming you're talking about a 7.3 powerstroke engine, then basically, yes. You will need to get rid of the factory air box to make room, and the filter just sits on the wheel well. As stated above, Clay at Riffraff Diesel a site sponsor, sells a complete kit for both the 94 to 97 models, and the 99 to 03 models. I chased down parts when I did mine, but Clay wasn't up and running at the time. You will save time by ordering his kit. The only drawback to this kit is that when you're towing, there is a pretty good drone coming from the filter that might annoy some folks. It don't bother me, or most folks, but it does some.Some folks have fabricated boxes to shield the filter from the back of the engine compartment that have had success at reducing the drone.
Freshman User
Joined: Jul 2009
Posts: 38
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Hotshot
Joined: Jul 2008
Posts: 11,231
Likes: 130
From: Thomasville, GA
I've seen guys make custom "boxes" around the 6637 filter but don't know if it really helps it at all.
As far as throttle response you might notice a slightly faster spool up of the turbo but probably not a really big power difference.
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
I believe the custom boxes were done in part to help reduce the drone noise.
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