Air filter
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Senior User
Joined: Sep 2007
Posts: 224
Likes: 0
From: Linton, IN
Air filter
I screwed up when I first got my truck and bought the K&N cold air intake. I was wondering if there is another filter that will fit in its place without changing the whole cold air intake. Thanks
Senior User
Joined: Oct 2005
Posts: 268
Likes: 0
From: Garden Grove, Ca
I made the same mistake as you (before I discovered this forum and the path to F250 PSD Righteousness). Do like I did, bite the bullet, de-install the K&N and install the 6637 mod. You'll be glad you did !
Tuned
Joined: Oct 2004
Posts: 442
Likes: 7
From: reno nevada
filter
Nice looking setup and looks like the way to go. Id bet it will have to increase power and mpg? Any tests been done on that as i know its popular? The stock system looks to me like its the same size as my old Ranger! Anything should be better than that
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Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
If the K&N tube is 4" OD, you could just slide the 6637 right over it, and clamp it in place. Here's what mine looks like with a piece of 4" OD SS exhaust as an adapter:
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Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
I don't think I could tell the difference in power, but the noise is great. I put the 6637 in at the same time I started useing DK, and had a 1 mpg gain. Might be the combo together that did this.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Yes he can make you one for the AFE filter.
If you go to napa, carquest, etc. the wix part number is 546637. You can get them cheaper at FleetFilter.com search for part # 46637.
