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07-25-2008, 05:52 AM
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#1
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Registered User
Join Date: Nov 2007
Location: Edmonton, Alberta, Canada .
Posts: 1,490
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Does this thing really work to keep out the finer dust particules? I know it helps repel water and last for about two years. It's actually kind of funny that K&N would make a filter for there filter. Opinions?
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07-25-2008, 05:58 AM
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#2
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Registered User
Join Date: Nov 2005
Location: La Verne, CA
Posts: 6,940
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If you have a K&N filter now, the pre-filter is a great idea. It'll stop some of the fine particulate that will pass through the normal K&N filter without it.
If you don't have a K&N and are thinking about going that route, I'd recommend sticking with the stock air box and paper filter. Just change it often.
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07-25-2008, 06:24 AM
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#3
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Registered User
Join Date: Nov 2007
Location: Edmonton, Alberta, Canada .
Posts: 1,490
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Yep. I have the cone filter setup w/ the pre-charger. Just looking for opinions on this product.
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07-25-2008, 12:24 PM
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#4
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Registered User
Join Date: May 2007
Location: Lubbock
Posts: 736
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Yes the precharger helps. Much more when I had it in the engine bay because it would keep the mud out of the fins of the filter.
__________________
My 1 ton TJ build project "Evil Monkey": [url]http://www.jeepforum.com/forum/showthread.php?t=423989[/url]
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07-25-2008, 12:31 PM
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#5
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Do it right or not at all
Join Date: Jan 2003
Location: Escondido, California, California
Posts: 57,627
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A K&N needs as much help as it can get so far as filtering air goes, any kind of a pre-filter over it is a good thing. Before I got rid of my K&N, it had two prefilters over it... an Outerwears (like the K&N precharger) and a foam Unifilter.
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07-25-2008, 12:34 PM
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#6
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Registered User
Join Date: Nov 2007
Location: Edmonton, Alberta, Canada .
Posts: 1,490
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Quote:
Originally Posted by Jerry Bransford
A K&N needs as much help as it can get so far as filtering air goes, any kind of a pre-filter over it is a good thing. Before I got rid of my K&N, it had two prefilters over it... an Outerwears (like the K&N precharger) and a foam Unifilter.
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Wow. It must of looked like a giant sock puppet.
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07-25-2008, 12:36 PM
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#7
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Registered User
Join Date: Apr 2008
Location: , Republic of Texas
Posts: 61
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Sounds funny, a filter for a filter.
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07-25-2008, 12:38 PM
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#8
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Do it right or not at all
Join Date: Jan 2003
Location: Escondido, California, California
Posts: 57,627
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Quote:
Originally Posted by Jamzjeep
Wow. It must of looked like a giant sock puppet.
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It wasn't bad, this pic shows them slid partially off the K&N to show the two pre-filters I added. 
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07-25-2008, 01:03 PM
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#9
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Registered User
Join Date: Nov 2007
Location: Edmonton, Alberta, Canada .
Posts: 1,490
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Hmmm. I think it's time to bust out the old stock intake. Wish I knew about this forum BEFORE I wasted my cash.
Anyone want to buy a nicely broken in K&N intake system? 
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07-25-2008, 01:15 PM
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#10
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Read tech links in my sig
Join Date: Dec 2005
Location: Colorado
Posts: 21,685
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click the link in the sig for CAI/K&N info.
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07-25-2008, 01:25 PM
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#11
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Registered User
Join Date: Jan 2007
Location: Ct
Posts: 124
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not for nothing but....I always thought people put on the K&N stuff so there is more air flow, which translates to more hp...albiet probably insignificant. Now people are putting fileters on top of thier filters? isnt that defeating the purpose? I can't imagine that a K&N with two filters on top of it could flow better than a stock paper filter, maybe I'm wrong though.
__________________
2006 X, RE 4.5" SF lift (3.5" springs) AA SYE + Tom Woods CV shaft, SRC Front+Rear bumper+rock guards, Daystar 1" body lift, 32" X 11.50" BFG Muds on American Racing Teflon 15 X 8's, PIAA fogs, On the way: G2 dana 44's front/rear,Trutrac (rear) and ARB (front), OBA, rear disk brake conversion, BFG 35's
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07-25-2008, 01:40 PM
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#12
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Do it right or not at all
Join Date: Jan 2003
Location: Escondido, California, California
Posts: 57,627
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Quote:
Originally Posted by Black06X
not for nothing but....I always thought people put on the K&N stuff so there is more air flow, which translates to more hp...albiet probably insignificant. Now people are putting fileters on top of thier filters? isnt that defeating the purpose? I can't imagine that a K&N with two filters on top of it could flow better than a stock paper filter, maybe I'm wrong though.
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In the TJ 4.0L engine's case, its air intake system is very non-restrictive so installing a K&N doesn't improve the air flow like it can on an engine that has a restrictive air intake. A Camaro Z-28 and Mustang 5.0L both have purposely restrictive air intakes so either will benefit from a K&N, just not the TJ's 4.0L engine since it has a non-restrictive air intake.
In my case, adding the two prefilters on top of the K&N made zero difference in anything that I could detect. Even with the two prefilters, my air intake still easily flowed all the air my 4.0L engine ever asked for and was capable of consuming even at WOT and high rpms.
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>
K&N Pre-charger?
