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For the run of the mill cai it looks like you get a new air delivery hose from the air box to the motor and a coned shaped air filter. Not being a smartazz, but what makes cai better? Not really sure how it works. Thanks in advance
 

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Now the real question you should be asking is why they are called CAIs when they're still under-the-hood intakes and there are no hood vents. Answer: they're not CAIs, generally, unless you modify the hood or create some other external vent to feed them.

What they really are is just bigger air filters that let more air flow more easily into the throttle body. When the engine runs, it reduces air pressure in the intake by sucking air into the cylinders. This can drop by several psi in a lot of stock engines. There are a couple of stages for addressing this.

First, a bigger filter surface area lets more air through more quickly, which keeps the intake air pressure higher. Second, you can add a blower. Turbo chargers are most common. Use the exhaust to drive the turbo's turbine which in turn drives a blower fan to push air into the intake, increasing it dramatically. And then there are superchargers.
 

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For the run of the mill cai it looks like you get a new air delivery hose from the air box to the motor and a coned shaped air filter. Not being a smartazz, but what makes cai better? Not really sure how it works. Thanks in advance
Better HP, better gas mileage, combo of the two....Cooler air is denser though and thus contains more O2. The more O2 the better the fuel burn. The better the fuel burn the better the HP is the very RAW basics
 

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Now the real question you should be asking is why they are called CAIs when they're still under-the-hood intakes and there are no hood vents. Answer: they're not CAIs, generally, unless you modify the hood or create some other external vent to feed them.

What they really are is just bigger air filters that let more air flow more easily into the throttle body. When the engine runs, it reduces air pressure in the intake by sucking air into the cylinders. This can drop by several psi in a lot of stock engines. There are a couple of stages for addressing this.

First, a bigger filter surface area lets more air through more quickly, which keeps the intake air pressure higher. Second, you can add a blower. Turbo chargers are most common. Use the exhaust to drive the turbo's turbine which in turn drives a blower fan to push air into the intake, increasing it dramatically. And then there are superchargers.
I asked this same thing a lot in my younger years...just gave up...more air doesn't equal cooler air, but more air does potentially mean more air absorption
 
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You crack me up. I'm the advocate in my family for saying "I don't know! Did you Google it?!"
I do think it's funny that people ask questions in these forums and check back hours later when Google can answer a lot of them in seconds. I used to tell my daughters to "look it up" on a lot of things, most especially if I thought they were trying to get me to do their homework, or if they were just being lazy. Now one's a nuclear engineer designing powerplant cores, and the other one is some sort of specialist in bone studies and stuff I know nothing about. :)
 

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I do think it's funny that people ask questions in these forums and check back hours later when Google can answer a lot of them in seconds. I used to tell my daughters to "look it up" on a lot of things, most especially if I thought they were trying to get me to do their homework, or if they were just being lazy. Now one's a nuclear engineer designing powerplant cores, and the other one is some sort of specialist in bone studies and stuff I know nothing about. :)
Sadly though I can see why some would want to ask though...don't always believe everything you read on the net... Kind of like the headlight issue...I've heard 20 different stories so I pursued the answer on my own.
 
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I asked this same thing a lot in my younger years...just gave up...more air doesn't equal cooler air, but more air does potentially mean more air absorption
The answer is that people just like acronyms. So CAI became the common name, even though they're not selling you scoops and vents. Just open boxes. The only reason for cool air is to increase the quantity of air (and O2) into the cylinder, as you were saying. It's not really necessary to cool it if you compress it in another way. Turbochargers and superchargers are called compressors for that very reason. Of course, you can do both, cool and compress. Not really needed for city/highway driving unless you like to collect citations.
 

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Sadly though I can see why some would want to ask though...don't always believe everything you read on the net... Kind of like the headlight issue...I've heard 20 different stories pursued the answer on my own.
Yeah, you can get 20 different stories in a forum, too. :)
Sort of like politics though....the more people ya ask the easier it is to form your own opinion when the answer can be convoluted. Have to admit. We both know CAIs are not an easy topic since the name doesn't match what they really do :)
 
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Discussion Starter #13
It's all good. I appreciate the responses. I could have googled it, but I figured the folks in here were more informed as to how good they worked on the Rebel.
 

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It's all good. I appreciate the responses. I could have googled it, but I figured the folks in here were more informed as to how good they worked on the Rebel.
I had one in my previous ram and now one on the Rebel. Both have me improved MPG and HP
 

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so talking CAI is there a company out there that makes an adapter or something so I can utilize one of the fake intakes on the hood?
 
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