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IMO and research spend your $300.00 on worth while mods.
 

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They make a nice sound but do little else. The CAI's really only show real improvement if they allow increase air flow on a restricted stock intake. The stock intake on a JK isn't restricted. The other part is if it can bring in cold air but the CAI's for Jeeps have the air flow come in at the same location as the stock so they are bringing in the same hot engine bay air. You might see on a Dyno about 2 to 3 hp increase at best in normal driving range. The Dynos done have shown little if any improvement.
 

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Discussion Starter · #4 ·
I figured it would be a waste. I like the sound of them but would rather an exhaust for that. What about just a k&n filter?
 

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Never understood why they call them "cold air intakes" Most factory air boxs pull in fresh air from the fender or from the front of the vehicle. Most aftermarket air intakes are just open filters on a stick. With an open filter when your engine warms up the air just sucks in all that nice heat coming off the engine. More like a hot air intake along with their "hot" sales pitch.
ONLY good thing about those is it allows for a great amount of air flow IF you have ohter upgrades to the engine that causes the engine to need more air.
 

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The air raid CAI dyno sheet shows a 8 HP / 12 ft lb torque increase and is the only one to retain the enclosed airbox which can be adapted to a snorkel as well as protecting the filter from water during creek crossings.

Seat of the pants dyno confirms the extra ooompfh and every bit helps when making up for what you lose with a lift and larger tires.

To each their own, that is what makes your jeep yours.
 

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Not all CAI are created equal, if someone thinks the JK intake is not restrictive they are wrong period. It's been proven on a dyno in many cases that a CAI actually improves HP and torque even more than a cat back exhaust would. Typical gains on the new Pentastar are 12-15 HP and 10-13 torque with a AfE intake. Not only that but they remove the slight hesisation you feel with the DBW from a dead stop. Do your research, CAI are not just louder. They also provide a slight improvement on MPG.

I run the Banks intake and love it.
 

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I have been running the Airaid MXP CAI (Synthamax filter) in my 2012 JKUR for about a month now. Yes, it does have a little more growl when accelerating. As for power, I haven't noticed but I am not sure I would feel an 8HP gain. After four tanks of gas, I have noticed I am averaging 21.0 MPG versus the 19.3 MPG I was averaging before the install, at least according to the EVIC computer. So there is something to be said for that. I was able to pick up the CAI for $215, a pretty good deal IMO, but is it worth $315 or more? The jury's still out on that!
 

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Love my Airaid kit and would never go back to stock. Engine response is more linear, noticeably so. Sound is fantastic and makes driving more enjoyable. Filter is washable with soap and water and will never have to be replaced. I love it.
 

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Just put an Airaid on, and like all my great decisions, after researching it after I've done it, I probably would have left it alone.

I'll be making a 3000km trip starting tomorrow, so I'll have some empirical data when I get back. Expect to be underwhelmed...
 

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Had airaid in my mustang love it outperformed k and n all day if I ever put one in here it would be airaid no questions
 

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I put a CAI on my '10 Islander, and I gained 13 hp and 2 mpg's. It also smoothed out the highs on my Infinity system, added a little low-end punch to the stock subwoofer, and stopped my 3.8 from burning oil. I swear by them.

S
 

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I believe the general consensus is that CAI's provide little if any performance increases. The sound is louder though! ;-)
 

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So 10-13 HP and 10 torque is little if any performance increase? Thats a lot from just a intake replacement.
Do you have personal dyno sheets or are you quoting aFe?
 

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Dyno sheets from multiple manufacturers of CAIs, as well as dyno sheets from actual forum members, have all shown 6-13 horsepower increase depending on what particular CAI you go with.

The stock intake has some appendages molded onto it to reduce noise. Problem is, those appendages create low pressure areas in the air flow and that's why I think the engine response is so crappy with the stock parts. I've gone back and forth between stock and aftermarket a few times just to compare, and when I put the stock intake back on it's instantly noticeable. It requires more pedal to get the same throttle input, and like I said it's not nearly as linear. I feel great about the CAI kit.
 

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So 10-13 HP and 10 torque is little if any performance increase? Thats a lot from just a intake replacement.
You will find various dyno runs that show that mystical 10+ HP, and then other runs that show 2-3HP... which could be just test variation.

10HP isn't 'a lot', but in the wheezy 3.8, it would be nice... that's what I was hoping for anyway... I live in high mountains, and have lots of 4th gear hills on the highway.

Honestly, if rocket-ship is the end game, stop investing in the 3.8 and save your pennies for a 3.6 pento-star. No comparison...
 

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Dyno sheets from multiple manufacturers of CAIs, as well as dyno sheets from actual forum members, have all shown 6-13 horsepower increase depending on what particular CAI you go with.

The stock intake has some appendages molded onto it to reduce noise. Problem is, those appendages create low pressure areas in the air flow and that's why I think the engine response is so crappy with the stock parts. I've gone back and forth between stock and aftermarket a few times just to compare, and when I put the stock intake back on it's instantly noticeable. It requires more pedal to get the same throttle input, and like I said it's not nearly as linear. I feel great about the CAI kit.
Helmholtz resonator.
 

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The OP has a 3.6.
Still waiting to see someone post real gains that are consistent, not max numbers based on one run of hyper-injected, super-compressed air.
A side note: though I'm obviously skeptical about a CAI's value, I've used enough to say they definitely sound different and, especially when paired with an exhaust system or super/turbo-charged engine, can have a small impact on performance.
Still wouldn't bother with one for a Jeep.

S
 

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Dyno sheets from multiple manufacturers of CAIs, as well as dyno sheets from actual forum members, have all shown 6-13 horsepower increase depending on what particular CAI you go with.

The stock intake has some appendages molded onto it to reduce noise. Problem is, those appendages create low pressure areas in the air flow and that's why I think the engine response is so crappy with the stock parts. I've gone back and forth between stock and aftermarket a few times just to compare, and when I put the stock intake back on it's instantly noticeable. It requires more pedal to get the same throttle input, and like I said it's not nearly as linear. I feel great about the CAI kit.
I totally agree. Not all intake upgrades are the same. Throttle is much smoother and vehicle accelerates with less hesitation. A noticable increase in mpgs. Sounds really good too. Never needs replacing or oiling with the synthamax filter. And I got a great deal on my airaid for $265 and got a $50 cash rebate making $215 shipped. Can't beat that.
 
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