Which Filter Flows More Air?
Thread Starter
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Elder User
Joined: Feb 2005
Posts: 712
Likes: 0
From: Marietta, OH/Weirton, WV
Which Filter Flows More Air?
I currently have a homemade air intake I have used a K&N air filter with. My Question is which filter flows more air the K&N or the NAPA filter i cant remember the number 6637 maybe im not sure.
-----------jeremy
-----------jeremy
Fleet Mechanic
Joined: Oct 2003
Posts: 1,764
Likes: 0
From: CentralEastern Utah
Their proably isn't much difference in the two. The K&N uses a more pourus filter(coated w/oil) to pull more air while the Baldwin(NAPA)just has more surface area. I don't trust the K&N for this reason. Plus I hate oiling the filter and all.
Playing in the Dirt
Joined: Oct 2005
Posts: 2,302
Likes: 1
From: Southwest Georgia
Is this what your looking for:
FLOW RESTRICTION FROM BEST TO WORST:
FILTER RESTRICTION in Inches H2O
K&N 4.54
Mystery bargain filter 4.78
AFE Pro Guard 7 Panel 4.99
Purolator 5.05
WIX/Napa 5.06
UNI 5.40
Baldwin 5.71
Amsoil 5.88
AC Delco 6.23
FLOW RESTRICTION FROM BEST TO WORST:
FILTER RESTRICTION in Inches H2O
K&N 4.54
Mystery bargain filter 4.78
AFE Pro Guard 7 Panel 4.99
Purolator 5.05
WIX/Napa 5.06
UNI 5.40
Baldwin 5.71
Amsoil 5.88
AC Delco 6.23
Lead Driver
Joined: May 2000
Posts: 9,236
Likes: 12
From: Senoia, GA
i'd rethink that, air flow isnt everything when talking about air filters. i mean if the filter isnt filtering everything out then why have one at all? the K&N may flow more but i garauntee the 6637 filters better! diesels just pull way too much air for a K&N
-cutts-
-cutts-
Thread Starter
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Elder User
Joined: Feb 2005
Posts: 712
Likes: 0
From: Marietta, OH/Weirton, WV
OK thanks, The reason I was asking this is because when I put this on I recieved no change in mileage and maybe only a little change in power.
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Posting Guru
Joined: Apr 2004
Posts: 1,424
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From: AZ
Originally Posted by plowhand
Is this what your looking for:
FLOW RESTRICTION FROM BEST TO WORST:
FILTER RESTRICTION in Inches H2O
K&N 4.54
Mystery bargain filter 4.78
AFE Pro Guard 7 Panel 4.99
Purolator 5.05
WIX/Napa 5.06
UNI 5.40
Baldwin 5.71
Amsoil 5.88
AC Delco 6.23
FLOW RESTRICTION FROM BEST TO WORST:
FILTER RESTRICTION in Inches H2O
K&N 4.54
Mystery bargain filter 4.78
AFE Pro Guard 7 Panel 4.99
Purolator 5.05
WIX/Napa 5.06
UNI 5.40
Baldwin 5.71
Amsoil 5.88
AC Delco 6.23
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Playing in the Dirt
Joined: Oct 2005
Posts: 2,302
Likes: 1
From: Southwest Georgia
Originally Posted by cookie88
I wonder who sponsored that bogus test. I mean come on....the factory GM filter outperforms every other manufacturer.....what a crock.
Senior User
Joined: Jul 2006
Posts: 406
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From: Haysville Ks.
I had heard from the stealerships here in town, don't run the k&n because they don't filter enough. On here they call it dusting the engine. The k&n just can't hold up to the suction the diesel has!! I used to run the k&n in my gassers and my diesel until I heard it here and from the stealership. I also vote for the 6637 or equivilent.
