K&N Cold Air Intake Kit? Is it worth it? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 03-01-2012, 07:05 PM   #1
Newb
 
dw49085's Avatar
 
Join Date: Nov 2011
Posts: 12
Red face K&N Cold Air Intake Kit? Is it worth it?

Hey everyone! I have a 2006 4.0 TJ and am thinking about adding on a K&N cold air intake kit. Has anyone done this? I have been told it would suck water if I ever got into a creek crossing situation. Is it worth it for the kit or should I just buy the K&N filter and put it in the stock air box? Let me know and keep it upright!!!!!!

__________________
dw49085 is offline   Quote Quick Reply
Old 03-01-2012, 07:07 PM   #2
Jeeper
 
Atthehop's Avatar
 
Join Date: Jul 2008
Location: NW, NJ
Posts: 3,941
NO. Do a search.

__________________
Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
Atthehop is offline   Quote Quick Reply
Old 03-01-2012, 07:12 PM   #3
In a trailer in the woods

WF Supporting Member
 
Barrie's Avatar
 
Join Date: Feb 2008
Location: Greater downtown Brownsville,Kentucky
Posts: 41,609
Send a message via AIM to Barrie Send a message via Yahoo to Barrie
Quote:
Originally Posted by Atthehop View Post
NO. Do a search.
Not nice!

Telling Users to "SEARCH".
__________________
2006 Unlimited Soft Top


Skillfully disguised as a responsible adult


Barrie is online now   Quote Quick Reply
Old 03-01-2012, 07:17 PM   #4
Jeeper
 
Join Date: May 2011
Location: sacramento
Posts: 115
easier to just post a thread and no reason not to, helps people search too.
__________________
whats the worst that can happen.
Will George is offline   Quote Quick Reply
Old 03-01-2012, 07:18 PM   #5
Jeeper
 
old_blue's Avatar
 
Join Date: Apr 2011
Location: Central Jersey
Posts: 869
If your wondering about power increase, to put it simply.... no.

As far as the sucking water part it makes a lot of sence and is a sound theory. However, my jeep came with a cold air intake and ive been wheeling it for a year now. Ive plowed into puddles at high speeds (not recommended), crossed creeks and have nosed into water higher than my hood and never once stalled, ran rough or got any sort of vapor lock. And yet people ive gone with went through the same stuff with stock air boxes and ended up pulling over to dry out there filters

Im not saying an cold air intake is better, just sharing my expierence with it.
old_blue is offline   Quote Quick Reply
Old 03-01-2012, 07:20 PM   #6
Jeeper
 
jerryj's Avatar
 
Join Date: May 2009
Location: Idyllwild
Posts: 670
I have a Banks and I went from 31's to 33's at the same time I put it on so I didnt notice any difference.Some say you cant get any more air through there so Its a waste of money If I had to do again I would probably just do a filter and spend the extra $$ else where maybe the Bacon of the month club or some thing mmmmmm bacon !!!
jerryj is offline   Quote Quick Reply
Old 03-01-2012, 07:30 PM   #7
Jeeper
 
IslandTJ's Avatar
 
Join Date: Mar 2008
Location: where I wheel: N 45║ 36.663' W 123║ 20.935'
Posts: 2,784
Quote:
Originally Posted by dw49085 View Post
Hey everyone! I have a 2006 4.0 TJ and am thinking about adding on a K&N cold air intake kit. Has anyone done this? I have been told it would suck water if I ever got into a creek crossing situation. Is it worth it for the kit or should I just buy the K&N filter and put it in the stock air box? Let me know and keep it upright!!!!!!
It's not worth the return to get a kit, to me the only reason to use a kit is if you need to claim the space where the stock airbox is. The stock airbox is efficient for air delivery - I don't even bother with a reusable filter, I just exchange with a fresh new Fram.
__________________
1998 TJ Moss Green Sahara w/ numerous scratches & dents whose playground is on a tropical island that's 33 miles long and 4-12 miles wide, in year-round 82 degree weather

Edit: "Now jeepin in Oregon"
IslandTJ is offline   Quote Quick Reply
Old 03-01-2012, 08:40 PM   #8
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,252
Images: 2
The very last air filter I would use in any of my engines is a K&N. K&N air filters let fine dust, silicates, etc. through like a screen door lets dust through from a Texas dust storm. A K&N is probably the very worst air filter for actually filtering dirt out of any of the common brands of air filters.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 03-01-2012, 09:49 PM   #9
Jeeper
 
Skyhawk32's Avatar
 
Join Date: May 2011
Location: New Jersey
Posts: 6,142
Quote:
Originally Posted by Jerry Bransford
The very last air filter I would use in any of my engines is a K&N. K&N air filters let fine dust, silicates, etc. through like a screen door lets dust through from a Texas dust storm. A K&N is probably the very worst air filter for actually filtering dirt out of any of the common brands of air filters.
What he said. Fram all the way.
__________________
Four words I am proudest of
I am a veteran
24 years USAF Retired
Jet Mach forever
Skyhawk32 is offline   Quote Quick Reply
Old 03-02-2012, 01:18 AM   #10
Jeeper
 
turnstyle's Avatar
 
Join Date: Feb 2012
Location: West Sonoma County
Posts: 144
Images: 2
My TJ came with a K&N intake kit, I would gladly trade you for your stock set up.
__________________
Folks loves us some Jeeps out here.

turnstyle is offline   Quote Quick Reply
Old 03-03-2012, 09:46 AM   #11
Newb
 
dw49085's Avatar
 
Join Date: Nov 2011
Posts: 12
Thumbs up Thanks all!!!

Wow I did not really expect that kind of huge "NO" reply. Thank you each and everyone for your answers. Except maybe the "search" reply. Have a great weekend all!!!!
__________________
dw49085 is offline   Quote Quick Reply
Old 03-04-2012, 01:31 PM   #12
Jeeper
 
Join Date: Dec 2011
Posts: 68
I put the K&N Cold Air Intake and a Flowmaster exhaust on my '06 upon purchasing it, as this is one of the standard "first thing to do" for many people, and I've had no problems with it. I like how it looks in the engine bay and I like not having to ever replace filters. I have no doubt that a paper/factory filter would work better at blocking fine dust and particulate, but I rarely drive in dusty conditions and therefore don't care.
nightop is offline   Quote Quick Reply
Old 03-04-2012, 01:39 PM   #13
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,252
Images: 2
You may be interested in the below part of results from an ISO lab test of air filters then.



The below text was copied verbatim from the test results... their words, not mine.

"In the chart above it’s important to note the different test durations for each filter. The AC Delco filter test ran for 60 minutes before exceeding the restriction limit while the AMSOIL and K&N tests each ran for 20 and 24 minutes respectively before reaching max restriction. In 60 minutes the AC Filter accumulated 574gms of dirt and passed only 0.4gms. After only 24 minutes the K&N had accumulated 221gms of dirt but passed 7.0gms. Compared to the AC, the K&N “plugged up” nearly 3 times faster, passed 18 times more dirt and captured 37% less dirt."

Few people understand just what a poor air filter a K&N really is.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 03-04-2012, 01:52 PM   #14
Jeeper
 
KKhamesi's Avatar
 
Join Date: Jun 2011
Location: 22066
Posts: 665
WHAT???!!!! damn i had no idea. i think i might just sell my k&n air filter and try to get a AC delco
__________________
Getting stuck is never an option

33" GY DuraTracs
3" Zone lift
Engo 12k Winch
built in air system
KKhamesi is offline   Quote Quick Reply
Old 03-04-2012, 02:31 PM   #15
Jeeper
 
Mom sold the Jeepster's Avatar
 
Join Date: Mar 2012
Location: Cincinnati
Posts: 273
What were the test conditions? How are they different than off road driving or on road driving? Have they tested filters under normal driving conditions?

Does this mean the ac delco blocks more dust but chokes the air flow?

I put a K&N in the stock air box with no expectation of performance gains. I did it primarily so I could clean and re-use. I noticed a lower exhaust note and it handles "the cut in the hill" and my steep driveway with much less effort. The cut in the hill is a steep grade on I-75 from Kentucky down to cross the Ohio River into downtown Cincinnati.
Mom sold the Jeepster is online now   Quote Quick Reply
Old 03-04-2012, 06:34 PM   #16
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,252
Images: 2
The above mentioned lab test always infuriates the K&N believers, I know. The tests were performed in lab conditions using ISO lab standards. That lab test was far more precise than can be accomplished on the road with whatever happens to be blowing around in the area.

What convinced me of the tests validity was that prior to me even seeing the lab report which is quite long, I had already removed my K&N because I noticed how much grime was getting past it. I ended up adding one pre-filter, then one more to stop the grime that was collecting inside the intake tube and throttle body. The amount of grime that had collected behind the K&N was amazing.

Thr below pic shows my old K&N air filter with the two pre-filters I added pulled back so they can be seen. The inner pre-filter was an Outerwears. The outer pre-filter, when the Outerwears proved to be not quite enough, was an oiled foam Unifilter.

Yes I had been anal about keeping it serviced per K&N's instructions and cleaning/oiling products when I discovered all the grime that had built up inside the air intake and throttle body. No more grime at all since I got rid of the K&N and went back to a paper A-C Delco air filter.

Trust me, I wouldn't have bothered adding TWO pre-filters on top of the K&N if it weren't for the amount of grime I discovered had been getting past the well-serviced K&N. I'll never run another K&N thank you.
Attached Thumbnails
Click image for larger version

Name:	K&N.jpg
Views:	84
Size:	64.8 KB
ID:	102200  
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 03-04-2012, 06:44 PM   #17
Jeeper
 
Tjdude08's Avatar
 
Join Date: Feb 2012
Location: Bedford, Va
Posts: 1,141
Glad I read this. Im getting rid of mine as well.
Tjdude08 is offline   Quote Quick Reply
Old 03-04-2012, 06:52 PM   #18
G54
another brick in the wall

WF Supporting Member
 
G54's Avatar
 
Join Date: Jan 2008
Location: NEO
Posts: 17,122
Images: 5
I can think of a lot of better ways to spend $241.10 on my Jeep.
G54 is offline   Quote Quick Reply
Old 03-04-2012, 07:12 PM   #19
Jeeper
 
Tjdude08's Avatar
 
Join Date: Feb 2012
Location: Bedford, Va
Posts: 1,141
Yea and good thing I only have the filter. Not cai
Tjdude08 is offline   Quote Quick Reply
Old 03-04-2012, 07:16 PM   #20
G54
another brick in the wall

WF Supporting Member
 
G54's Avatar
 
Join Date: Jan 2008
Location: NEO
Posts: 17,122
Images: 5
My LJ had the K&N filter when I bought it. It is still sitting on a shelf in the garage.
G54 is offline   Quote Quick Reply
Old 03-19-2012, 08:51 PM   #21
Jeeper
 
bucsman76's Avatar
 
Join Date: Mar 2012
Posts: 67
I don't see FRAM filters on that chart? Are they decent?
bucsman76 is offline   Quote Quick Reply
Old 03-19-2012, 08:59 PM   #22
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,252
Images: 2
Like most any paper element air filter including those from AC-Delco and Purolator, Fram's air filter are fine. I've actually been in the room where Fram's air filter tests are done and compared to other brands.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 03-19-2012, 11:13 PM   #23
Jeeper
 
bucsman76's Avatar
 
Join Date: Mar 2012
Posts: 67
Quote:
Originally Posted by Jerry Bransford View Post
Like most any paper element air filter including those from AC-Delco and Purolator, Fram's air filter are fine. I've actually been in the room where Fram's air filter tests are done and compared to other brands.
What were the results of those comparisons between FRAM and the other brands? I figure a paper filter is a paper filter is a paper filter....ya know what I mean?

bucsman76 is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Still cant find out where the noise is coming from SouthernOhioWrangler TJ Tech Forum 8 02-19-2013 01:25 PM
Rugged Ridge WINCH 8500 & 10500 Cable and Synthetic with Warranty $279.95 shipped Baseline 4x4 Outfitters Vendor Spotlight! Great Deals for Members. 15 06-05-2012 08:31 PM
Teraflex Leveling Kit Question TDUFF JK General Discussion Forum 8 03-02-2012 02:08 PM
Will Sahara wheels & tires fit on my stock base '12? Dale_K JK General Discussion Forum 7 03-02-2012 10:45 AM
What year is my 4.0? Wrangler40 TJ General Discussion Forum 4 03-01-2012 04:31 PM



Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 07:02 AM.



Jeep«, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC