K&N to DIY 6637 - Ford Powerstroke Diesel Forum
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post #1 of 63 Old 12-09-2011, 10:26 AM Thread Starter
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K&N to DIY 6637

I am switching my intake over to a better filtering system, i live on a dirt road so the K&N isnt a good choice for me. i should be getting my filter in the mail today and im wondering how much loss of power im gonna see by switching to the 6637?

-Conner

1997 F-250 Long Bed Extended Cab
--7.3 Powerstroke E40D Auto
--4.10 Rear End
--280,000 Miles

-Napa 6637 DIY CAI
-3 inch DP, 5 inch under truck, 6 inch Mitre!!
-2nd gen Wicked Wheel from Dieselsite
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post #2 of 63 Old 12-09-2011, 10:29 AM
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Quote:
Originally Posted by Red '97 View Post
I am switching my intake over to a better filtering system, i live on a dirt road so the K&N isnt a good choice for me. i should be getting my filter in the mail today and im wondering how much loss of power im gonna see by switching to the 6637?
NONE, the 6637 has far more surface area to filter which leads to less restriction. I noticed very slightly lower egt temps and better response when I switched. Power difference was not noticeable under 20lbs boost, but above it seemed to black smoke less when i had it cranked up which means more air Is going into the engine

2000 f-350 CCSB
Fabtech 10" with ladder bars
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post #3 of 63 Old 12-09-2011, 01:52 PM Thread Starter
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hmmm so this thing will add more power than my K&N??

-Conner

1997 F-250 Long Bed Extended Cab
--7.3 Powerstroke E40D Auto
--4.10 Rear End
--280,000 Miles

-Napa 6637 DIY CAI
-3 inch DP, 5 inch under truck, 6 inch Mitre!!
-2nd gen Wicked Wheel from Dieselsite
-Tony Wildman 6 Position Chip
Broke College Kid Mod
Now residing in LARAMIE, WY for school at the University of Wyoming! Hit me up if youre around, I'm always down for a hot rodding adventure

"Never cut what you can untie"
--Buckaroo Proverb
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post #4 of 63 Old 12-09-2011, 02:06 PM
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It will filter better, is it a drop in or full intake?

-Kris-
2011 f150 ecoboost 4x4 323/452 on php dyno 11/16/13
1995 CCLB DRW 324K
2001 CCLB DRW 319K
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post #5 of 63 Old 12-09-2011, 09:16 PM Thread Starter
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my K&N is a full intake system

-Conner

1997 F-250 Long Bed Extended Cab
--7.3 Powerstroke E40D Auto
--4.10 Rear End
--280,000 Miles

-Napa 6637 DIY CAI
-3 inch DP, 5 inch under truck, 6 inch Mitre!!
-2nd gen Wicked Wheel from Dieselsite
-Tony Wildman 6 Position Chip
Broke College Kid Mod
Now residing in LARAMIE, WY for school at the University of Wyoming! Hit me up if youre around, I'm always down for a hot rodding adventure

"Never cut what you can untie"
--Buckaroo Proverb
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post #6 of 63 Old 12-09-2011, 09:20 PM
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Throw away that K&N and never look back.

Allen
1999.5 F-350 7.3, six-speeed

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post #7 of 63 Old 12-09-2011, 09:40 PM
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It won't ADD power. Intakes just allow the engine to breath better. This one does that and filters better.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
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post #8 of 63 Old 12-10-2011, 12:20 AM
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6637 all the way. I air compressed out my engine bay and my stock box that had a k and n. Plumes of dirt rolled out. Even after blowing out the k and n it was filthy. 6637 all the way.

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post #9 of 63 Old 12-10-2011, 06:27 AM Thread Starter
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alright ya i dont think the k&n will have done too much damage in just 20,000 miles, the fins on the turbo still looked fine but im glad im getting this system. kids are already giving me crap about it at school though haha

-Conner

1997 F-250 Long Bed Extended Cab
--7.3 Powerstroke E40D Auto
--4.10 Rear End
--280,000 Miles

-Napa 6637 DIY CAI
-3 inch DP, 5 inch under truck, 6 inch Mitre!!
-2nd gen Wicked Wheel from Dieselsite
-Tony Wildman 6 Position Chip
Broke College Kid Mod
Now residing in LARAMIE, WY for school at the University of Wyoming! Hit me up if youre around, I'm always down for a hot rodding adventure

"Never cut what you can untie"
--Buckaroo Proverb
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post #10 of 63 Old 12-10-2011, 07:14 AM
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I myself wouldnt worry about 'kids'

Elmo/Shane

96 F350 4x4
Everything.
And its expensive.

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