Jet Stage 1 with K&N Filter does good on 4.0L - 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 09-24-2009, 02:28 PM   #1
WTS
Jeeper
 
Join Date: Aug 2009
Posts: 87
Jet Stage 1 with K&N Filter does good on 4.0L

I was happy. I put the Jet Stage 1 with K&N airfilter in a stock airbox and was happy with the increase from it.

Anyone else use this?

WTS is offline   Quote Quick Reply
Old 09-24-2009, 02:50 PM   #2
Jeeper
 
mudslinger150's Avatar
 
Join Date: Jul 2009
Location: Northern VT
Posts: 1,128
Images: 1
what did you see for a power increase? did you improve milage at all?

__________________
Mitch

Vermont
The Green Mountain State

http://www.cardomain.com/ride/3821222

http://www.youtube.com/watch?v=20dGUB6uJcQ
mudslinger150 is offline   Quote Quick Reply
Old 09-24-2009, 03:03 PM   #3
WTS
Jeeper
 
Join Date: Aug 2009
Posts: 87
I feel the increase but I haven't checked the milage yet. I just installed it.
WTS is offline   Quote Quick Reply
Old 09-24-2009, 03:11 PM   #4
Jeeper
 
Ej132's Avatar
 
Join Date: Jan 2009
Location: Mid Michigan
Posts: 136
I have been looking at chips but now I think I'm going to do a performance tuner some day
Ej132 is offline   Quote Quick Reply
Old 09-24-2009, 04:58 PM   #5
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 30,852
Images: 2
I'm no fan of either device. First, the Turbochip only does anything at all at wide-open-throttle and extremely high engine rpms. Legally, that is all they can be designed to do. If you're racing at the quarter-mile or you're 18, I'd say it may be worth your $$$ but for the other 99% of us Jeep owners, it's a waste of $$$.

The K&N air filter is actually a bad product for our Jeeps if you wheel in dusty conditions. It has been shown to let so much extra dirt into the engine that it's ridiculous. Not to mention that the OE air filter box is proven to have more air flow capability than the engine can draw at WOT and at max rpms. A K&N can let more air into SOME engines with purposely designed restrictive air intakes like some cars have but the TJ's air intake system was specifically designed to be totally non-restrictive.

That a K&N lets so much more grime into the engine plus the fact the engine isn't getting any more air with it (really, no rumor), a K&N is one of the worst things that can be done to a 4.0L engine. By the way the significant amount of added dirt the K&N passes was discovered in several ISO certified lab tests.

If someone is 16-21 and is more into speed than anything, then maybe a chip is worthwhile if you do a lot of wide-open throttle acceleration to high rpms. It doesn't do anything at lower rpms or non-WOT (throttle). No matter how you drive, a K&N air filter is never a good thing... if you love your engine that is. I got rid of my K&N years ago that ended up having two pre-filters over the top of it. I discovered on my own how much grime was getting past the K&N into my throttle body so I ended up installing an Outerwears pre-filter on it. When that wasn't quite enough, I added a foam Unifilter pre-filter over the top of the Outerwears pre-filter which finally turned the K&N filter into a reasonable air filter. My old K&N is now taking up space on a garage shelf.
__________________
When you have a choice, buy American.

Jerry Bransford 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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
Getting every pony from 2.5L & 4.0L quicksand97 TJ General Discussion Forum 6 09-13-2010 09:03 AM
intresting info on the 4.0L TB swap... foxinthemudd General Jeep Discussion 10 03-10-2008 11:37 PM
K&N FIPK - 91-95 YJ 4.0L - Gotta Go - Super Deal 4x4ROCKSHOP Classifieds Archive 1 02-03-2008 06:25 PM
'97 or newer TJ 4.0L Crankshaft Position Sensor (good for a spare too) $50 Jerry Bransford Classifieds Archive 1 02-04-2007 10:31 AM
snorkel vs. cold air intake vs. k&n air filter 97REDTJ TJ General Discussion Forum 4 06-25-2006 01:03 PM


» Rates
Get low rates on auto insurance in Canada!

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 11:14 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