What's the best Intake/CAI kit??

[JennaBear]

Anything that changes out that stock tube will be just fine. Go with what you want, they all perform pretty close to the same.

 

[Blkout02]

Is there much a difference between a dry filter and one that contains oil?

 

[madmac]

Cheap Alternative to CAI?

Back in the bad old days, resourceful hotrodders simply replaced the air filter with one that was too tall. This left a gap all the way around the air filter lid, bypassing the restrictive snorkel, and thereby increased air flow to the carburetor at a cost of, well, nothing. A four-barrel carb made a wonderful howling noise. For you youngsters, a carburetor was a device... never mind.

In that spirit, when I had a 1975 Volvo with Bosch fuel injection and no money for accessories, I simply drilled dozens of holes in the air filter canister. I have no idea if it got better mileage or more power, but it seemed to have better throttle response off idle and sounded stronger.

Don't get me wrong. I love those polished tubes and dashing red filters, but has anyone tried drilling holes or cutting openings in the stock air box? Of course it would no longer be a true cold air intake, but then most of the ones on the market look like they pull hot air from the engine compartment, too.

 

[mikeb33]

Don't get me wrong. I love those polished tubes and dashing red filters, but has anyone tried drilling holes or cutting openings in the stock air box? Of course it would no longer be a true cold air intake, but then most of the ones on the market look like they pull hot air from the engine compartment, too.

I did something similar on my '05 Tahoe. I detailed it here: http://www.tahoeforum.com/showthread.php?t=12062

I now have a '07 Denali and haven't yet looked to see if I can do this again.

 

[coopiesb]

my .02 cents......... ive ran aem in every vechile ive had

 

[Excon11]

Im looking at a fujita cold air intake for mine. Any body herd good/bad things about it? Thanks.

 

[mikeb33]

The stock tube is what you should be changing, as that is where all the restriction is. Check out the resonator on that thing.

I looked at the stock tube and it doesn't seem that bad. I do see the ridiculous looking resonator, but how does that hurt? The resonator is an acoustic sound canceling design, how does it hurt airflow? I would think ample diameter and smooth bends would be the most important, which the stock tube seems to have.

 

[madmac]

By resonator, if you are referring to the closed extension on the air intake projecting toward the driver side, the purpose may be this.

I am no automotive engineer, but if I remember correctly, Yamaha uses a similar arrangement on their ram air intake for the R1 or R6. The idea is that it stores a volume of air held in reserve to be used to aid in transition for sudden throttle openings. But I could be wrong, I often am.

 

[JennaBear]

The resonator (helmholtz) was put in the tube by GM to make the intake quieter. Here is a good explanation as to how it works:

http://en.wikipedia.org/wiki/Helmholtz_resonance

 

[mikeb33]

If that is true, I can't see a downside to it.
I still think it is a sound canceling thing. My 05 was louder with the Airaid jr tube, basically the same tube, without the extra chamber, or resonator.
I'd like to see a dyno with and without.