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Modified JK Tech Tech related bulletin board forum regarding subjects such as suspension, tires & wheels, steering, bumpers, skid plates, drive train, cages, on-board air and other useful modifications that will help improve the performance and protection of your Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) on the trail.

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Cold Air Intake

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Old Jan 24, 2008 | 10:37 PM
  #1  
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Default Cold Air Intake

Does Cold Air Intake really make a difference and is it worth it, if so can you post what you have??
Thanks!
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Old Jan 25, 2008 | 01:39 AM
  #2  
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I recommend a search, there are a million threads on them and tons of info, this what I did recently before buying mine and it was really helpful.
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Old Jan 25, 2008 | 02:53 AM
  #3  
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If you decide to buy one, I have an AFE in the "for sale" section....

https://www.jk-forum.com/forums/jk-performance-120/afe-cai-26036/
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Old Jan 25, 2008 | 04:48 AM
  #4  
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Originally Posted by AirBoyzT
Does Cold Air Intake really make a difference and is it worth it, if so can you post what you have??
Thanks!

Good question, and as was mentioned gets asked alot. And youl get just as many opinions as there are posts. I asked myself the same thing. With a few more variables.

Do I or will I hit deep water? No. I have no desire to flood my rig as it is also my daily driver. Underhood CAI's are really for street or dry wheeling, it'll leave your intake open to sucking water if you hit anything overly deep. So for me it was doable.

Do i want my Jeep louder? Yeah, I kinda like being able to hear the engine. I will be swapping my exhaust and re-routing it in the future. But then, i like my bike a bit louder as well (It also has an opened up intake, and a Supertrapp)

So, I have an Airaid on mine (price was right). I am doing my best to give it a fair, long term evaluation.

I like the sound, some don't. Nice little growl when you put your foot in it. (None of the whistle noted that some report) So far, I have netted about a 2mpg gain in fuel economy, but the weather is cold so I cant give an honest assesment until i can average in some warm weather driving as well.

I am happy with it so far, but i kept my stock airbox in case i change my mind, or decide to do some wetter wheeling.
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Old Jan 25, 2008 | 05:28 AM
  #5  
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Originally Posted by HappyCurmudgeon
So far, I have netted about a 2mpg gain in fuel economy
I believe you are still mostly stock, so hopefully you can answer this for me as I've looked at getting one for my mostly stock Sahara. I read that you really see the benefits around 4000 RPM. For street driving, I never go over 3000 rpm as I try to shift between 2000-2500 (I have a manual), so will this really do anything for me or will it all be about the growl? At what RPM do the autos shift?
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Old Jan 25, 2008 | 05:36 AM
  #6  
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After having my AEM Brute force on for about a year now I can say that I have not noticed and gain in MPG possibly only minor gain in hp in the 2000 - 3000 rpm range. I do however like the growl, but that is not worth 200+ dollars. I most likely would not purchase another one and have considered reinstalling my OEM air box.
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Old Jan 25, 2008 | 06:38 AM
  #7  
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I had the AIRAID and took it off. There was a change but not worth the 200+ dollars. I also failed to ask myself about river crossings. I slapped in a K&N and I'm just as happy.
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Old Jan 25, 2008 | 06:58 AM
  #8  
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Originally Posted by scouter4life
I believe you are still mostly stock, so hopefully you can answer this for me as I've looked at getting one for my mostly stock Sahara. I read that you really see the benefits around 4000 RPM. For street driving, I never go over 3000 rpm as I try to shift between 2000-2500 (I have a manual), so will this really do anything for me or will it all be about the growl? At what RPM do the autos shift?

I don't really watch my tach much, so i am uncertain where the thing shifts. I really do go more on feel. Havent had a tach in anything in a while so got used to not looking at it.

I would say overall it wont do much. ~2mpg isnt alot and it may well level out to nothing in the long haul, in which case it was a waste of money for the added growl. If it stays at 2mpg gain, over time it will pay for itself, but i have a sneaky suspicion it wont.

And i have to go with Robar here, though i do like the sound, I probably wouldnt buy one again based on my observations so far.
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Old Jan 25, 2008 | 07:34 AM
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I have had CAI's on a few vehicle's. The truth of the matter is that you will see the biggest performance gain at high RPM (4000). That does not negate the fact that you still will get a performance gain at lower RPM. Just not the full effect! Yes the engine runs better, yes you will see a MPG increase depending on your style of driving, yes you will get a HP increase 2-9 hp depending on CAI type and RPM.
Is this for everyone? NO, some are the visual type and need knobbies, lifts or bumpers. Some are really heavy footed and probably negate MPG increases.
My wife, being non technical or mechanical noticed a difference. CAI's combined with other performance parts and lubricants are always a good thing! Good Luck with your decision. Its tough because there are alot of great CAI's to choose from.
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Old Jan 25, 2008 | 07:41 AM
  #10  
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Originally Posted by Mr. T
I would buy another, but, only if i got the same price i paid this time. my gearing with 33's and a 6spd was "ok". this thing gave me some of the pep that was gone and i can actually use 6th gear now. sometimes it pays to keep an eye on the for sale threads. you can get some stuff pretty cheap. good folks on here. (thanks again cormac)
If i had those mods done, i would likely agree with you, but so far i don't, so i am not qualified to comment on those.

I agree that varying mods and driving habits will yield different results. I should have listed what was done to my Jeep in my first post, better late than never though so here goes:

I am on an Auto, 4:10's and the stock 32's. 2" lift, Shrockworks stubby.(hence no factory airdam)
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