get into the throttle hard and let off suddenly. it will become additcting
6637 Filter mod
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Senior User
Joined: Oct 2005
Posts: 130
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From: Utah for now
6637 Filter mod
Just did the 6637 filter mod on my truck, it was a good decision. This thing sucks some serious air; it breaths so much better than that dinky cone filter I had on before. Check out my gallery for pics. 
Last edited by BadFord99; Nov 1, 2005 at 04:13 PM.
Senior User
Joined: Sep 2005
Posts: 222
Likes: 0
From: NE Ft Collins, Colorado
just did mine last weekend too! it is an addicting thing...sounds almost like a blow off valve on a gasser but sounds much better from the diesel!! did my ccv while i was at it and some much needed cleaning...pics avail.
New User
Joined: Oct 2005
Posts: 7
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I have been reading up on changing my air intake set up and have come across this filter a few times. Tell me is this the way to go or what? I have a 02 f350 with the 7.3 all I have done is the superchips tuner and I'm ready to put the 4" turbo back system on. Is this 6637 filter from Wix?
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Bonus,
Yup. Actually, the Wix number is 46637.
If you can wait a bit to get it mail order, you can get them at a very substantial discount from one of FTE's sponsors,
http://www.fleetfilter.com
They even list them on their Home Page, under "Notice". I'll bet they sell a LOT of them to folks "in the know".
There is currently another thread about the 6637. Read:
https://www.ford-trucks.com/forums/s...d.php?t=425871
Pop
Yup. Actually, the Wix number is 46637.
If you can wait a bit to get it mail order, you can get them at a very substantial discount from one of FTE's sponsors,
http://www.fleetfilter.com
They even list them on their Home Page, under "Notice". I'll bet they sell a LOT of them to folks "in the know".
There is currently another thread about the 6637. Read:
https://www.ford-trucks.com/forums/s...d.php?t=425871
Pop
Last edited by SpringerPop; Nov 2, 2005 at 12:23 PM.
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Fleet Mechanic
Joined: Jun 2004
Posts: 1,296
Likes: 1
From: Coal Valley, Illinois
Originally Posted by bonuscheck
I have been reading up on changing my air intake set up and have come across this filter a few times. Tell me is this the way to go or what? I have a 02 f350 with the 7.3 all I have done is the superchips tuner and I'm ready to put the 4" turbo back system on. Is this 6637 filter from Wix?
Opps, guess I didn't post soon enough, Springerpop, you beat me to it.
Last edited by hink10; Nov 2, 2005 at 12:21 PM.
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Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Dey gots 'em!
By the way, Bonus, welcome to our Happy Fizzies Party! A nicer, more helpful, knowledgeable, bunch of guys you're never going to find elsewhere!
Every day I'm glad to be a part of this "Knowledge Bank" Put something in, take something out. Likely more information here than all the schools your dealer's "Factory Trained Mechanic" has been to, and a WHOLE LOT MORE intuitive problem diagnosis is going on.
If you stick around, you'll learn a LOT about your truck in a rather short time.
After a while, when you find it really worthwhile, consider being a supporter. It's cheap "mechanical insurance", and helps Ken to buy the bandwidth. Additionally, you get the forums in "full-screen".
It's all here at FTE, an off-ramp of the Information Super-highway!
Pop
By the way, Bonus, welcome to our Happy Fizzies Party! A nicer, more helpful, knowledgeable, bunch of guys you're never going to find elsewhere!
Every day I'm glad to be a part of this "Knowledge Bank" Put something in, take something out. Likely more information here than all the schools your dealer's "Factory Trained Mechanic" has been to, and a WHOLE LOT MORE intuitive problem diagnosis is going on.
If you stick around, you'll learn a LOT about your truck in a rather short time.
After a while, when you find it really worthwhile, consider being a supporter. It's cheap "mechanical insurance", and helps Ken to buy the bandwidth. Additionally, you get the forums in "full-screen".
It's all here at FTE, an off-ramp of the Information Super-highway!
Pop
Last edited by SpringerPop; Nov 2, 2005 at 12:52 PM.
Junior User
Joined: Jun 2005
Posts: 82
Likes: 2
From: Okanogan, WA
I couldn't find it anywhere, but I remember reading that the early 99 has smaller hose/duct and needs some modification to fit the 6637 mod? Can someone point me in the right direction. I would like to do this mod ASAP.
Thanks all!
Thanks all!
Definately an ONRAMP!
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Y'know, you're RIGHT! RIGHT ON! ON ramp!
Taylormade,
Go look at BadFord99's gallery at the top of this thread. He has an early-99 with a picture of what started this whole discussion.
Pop
Taylormade,
Go look at BadFord99's gallery at the top of this thread. He has an early-99 with a picture of what started this whole discussion.
Pop
Last edited by SpringerPop; Nov 2, 2005 at 01:55 PM.