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Unread 03-26-2014, 09:51 AM   #1
fireguyl9
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cold air intakes,yes or no?

thinking about installing a cold air intake system.
Is the cost worth any noticeable improvements or are they a pain in the butt?

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Unread 03-26-2014, 11:51 AM   #2
spjewell
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Don't do it! I purchased my YJ with one installed, it lets fine sand/silt through that will work its way into your engine. When I took my injectors in to be cleaned and have the filters replaced there was a beach party in there from the blow back.

If you do choose to go with a cold air intake system, make sure you spend the extra bux on a pre-filter (this most likely will negate any performance gains you receive to protect your engine)
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Unread 03-26-2014, 11:56 AM   #3
Que89YJ
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Read this:
http://www.fourwheeler.com/how-to/en...ing-true-lies/
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Unread 03-26-2014, 12:09 PM   #4
NHfireYJ
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Save your money...

If you wheel, and there is any water, then a snorkel or hummer intake (see my thread in signature) makes more sense.
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Unread 03-26-2014, 04:43 PM   #5
metalhead
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I have had one on every vehicle I have owned and never had a problem. I would stay away from the ones that have you oil the filter after you clean it. I have the afe setup on my grand Cherokee. It has a dry filter. Just wash it when dirty, let it dry and put it back in. They are all overpriced for what you get and they don't do much for performance. On my grand Cherokee anyway I mainly installed one to eliminate unnecessary parts. It makes it easier to work on the engine without having to remove this big plastic piece that was attached to the throttle body. I will be putting one on my wrangler as soon as funds allow.
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Unread 03-26-2014, 07:35 PM   #6
plym49
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Quote:
Originally Posted by fireguyl9 View Post
thinking about installing a cold air intake system.
Is the cost worth any noticeable improvements or are they a pain in the butt?
You can gain as much HP and improve your fuel mileage by the same amount by simply chrome plating every part of your Jeep.
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Unread 03-26-2014, 09:02 PM   #7
Matt The Hammer
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What if I live in the cold?

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Unread 03-26-2014, 09:31 PM   #8
JohnnyZJ
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no noticeable anything. you'll try to find the slightest difference just to justify the price, but theres none.
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Unread 03-27-2014, 02:03 PM   #9
XJ93
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That is a very good article Que, glad you posted that link it's going to change what I spend my money on now. My only question from that is what header out there has flex built into it? I saw one on quadratec that has flex sections built in, same as I sell at work. Anyone use those, or would it be better to put a braided flex section in the pipe before the cat somewhere?
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Unread 03-27-2014, 07:51 PM   #10
plym49
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Originally Posted by Matt The Hammer View Post
What if I live in the cold?

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Then it works even more against you. Warm or hot air atomizes the fuel better and burns better. There is a reason power plants preheat combustion air.

Cold air is for drag racing where the colder, denser air permits a richer mixture. You never run this rich on the street. In fact, if you have EFI your engine computer works very hard to keep the mixture at exactly stoichiometric. So cooling the inlet air is compensated by a change in the fuel mapping, and you end up exactly where you started.

Cold air systems are marketing hype. 99.9% of the vehicles that have them don't need them - except for bro-tastic bragging rights.
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Unread 03-28-2014, 05:12 AM   #11
Que89YJ
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The braided flex helps with the cracking issue on the manifold. If its by the cat it seems it would be too far away to help. Plym x2, I think thats was why they said no on the MPFI but yes on the carb.
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Unread 03-28-2014, 02:53 PM   #12
XJ93
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Flex closer to the flange then? Maybe on the vertical section of the tube?
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Unread 03-28-2014, 04:48 PM   #13
Opihi59
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Originally Posted by NHfireYJ View Post
Save your money...
I've got a 93 YJ, and two '04 TJ Rubicons. The latest Rubicon I bought had a number of PO installed systems that I have been working my way through, "unboogering" up everything that he or the PO PO had installed. I am almost down to just the cold air intake and Throttle body spacer that was on it when I bought it. I am hoping that at some point I will see on Craigslist a stock intake/airbox/etc will show up so I can dump the current aftermarket parts and buy that person's OEM intake system.
This Jeep has far poorer performance than my YJ which has 130,000 miles MORE on it, and it is noticeably weaker than my other Rubicon. Thumbs down from me on the cold air intake/throttle body spacer garbage I've got now.

If anyone happens to also have a TJ with the right part number on that system, pls PM me so that we can swap systems.
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Unread 03-30-2014, 06:10 AM   #14
willawolfe
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My air filter box retainers failed so the box doesn't shut tightly, that's gotta be good for about 7hp right?
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Unread 03-30-2014, 06:29 AM   #15
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Originally Posted by willawolfe View Post
My air filter box retainers failed so the box doesn't shut tightly, that's gotta be good for about 7hp right?
10 if you throw a sweet sticker on it.

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