Which AIR FILTER?
Senior User
Joined: Sep 2005
Posts: 257
Likes: 1
From: Grafton , WV
From what I have learned on here, I believe you should stay with the 6637. I don't believe you will gain that much over it either, plus it will be alot cheaper to replace in the future. I'm sure you will get more answers from the fine people on here.
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Senior User
Joined: Jul 2006
Posts: 126
Likes: 0
I see yalls point. Its just that I've had some trouble lately with the 6637 slipping off and I am constantly worried about it getting wet b/c its a paper filter. Not assuming the price factor - would the afe stage 1 give me a decrease in performance as compared to the 6637? Or they about the same as far as performance?
I just like the idea of having an oiled filter that can be cleaned, not worrying about it getting wet, and not having to worry about it slipping off.
I just like the idea of having an oiled filter that can be cleaned, not worrying about it getting wet, and not having to worry about it slipping off.
Lead Driver
Joined: Oct 2004
Posts: 7,413
Likes: 1
From: Columbia, MO
How is the filter held onto the intake pipe? I've got a piece of 4" exhaust tubing connecting the filter to the intake. Hasn't come loose in 2 years. Also, in the 2+ years I've been running the 6637 filter, it has yet to get wet. And, I've been through some pretty nasty rainstorms.
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Senior User
Joined: Jul 2006
Posts: 126
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jtharvey, the intake pipe is directly attached over the air filter. After it came loose the first time, I put three screws into the pipe/filter and got a bigger clamp. Thats how its currently riding, hasn't came off yet.
If you had both 6637 and afe stage 1 sitting at the house, which one would you use?
If you had both 6637 and afe stage 1 sitting at the house, which one would you use?
Lead Driver
Joined: Oct 2004
Posts: 7,413
Likes: 1
From: Columbia, MO
6637 for sure. It flows more air than what our engines can use, and it filters well. I've heard too many reports of the gauze or cotton cleanable filters letting small amounts of dust and dirt through. That's why they flow so well. But, that will also destroy a turbo. Small dust particles can do a lot of damage over time to turbine blades spinning in excess of 100K RPM.
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Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
I am with JT I put a piece of 4" exhaust pipe to connect the filter to the intake tube, the fitting it over directly is just asking for trouble IMHO. Maybe it's cheaper but for the couple of bucks spend to do it right vs the cost of a new turbo or engine because it fell off and you didn't notice it before driving down that dirt road it's not worth the savings.
And I would stay with the 6637.
And I would stay with the 6637.
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Postmaster
Joined: Jun 2005
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From: New Hampshire
Originally Posted by HUNTER10
I currently have the napa 6637 air filter on my 2001 PSD. I have the opportunity to get a AFE stage 1 air filter for extremely cheap. Which would should I use on my truck?
Nut
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Senior User
Joined: Jul 2006
Posts: 126
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Alright fellas, yall have me convinced, so I'll stay with the 6637-->yall always seem to know best and have never steered me wrong before. I'll go ahead and get the 4'' exhuast pipe today.
One more thing, it won't put the 6637 filter at risk of getting wet if I do the Zoodad mod to my truck will it?
One more thing, it won't put the 6637 filter at risk of getting wet if I do the Zoodad mod to my truck will it?
