Question on CAI

[Sleepengine]

hi gurus,

 

 

just wonderring abt how cold air intake works...

 

it seems to be working of the theory getting cooler air from cooler parts of the engine bay area or/and adding some kind of heat shield to prevent heating up of the air to the air intake box.

 

if this is a case, then why is it that we can't just draw some cold air from our aircon and feed into the stock air intake system. Is it because of these reasons?

1) the small amt of cool air from the aircon is too insignificant to make a difference

2) this increases the load of the aircon which offsets and performance gain

[Jacf]

yo bro, u just need to do a search & all your qns will be answered! too many topics on this before.. do a search for CAI .. u will be overload with info on this..

[Sleepengine]

ok, thanks

[Bern2]

1) Yes.

2) Yes.

 

Basically colder air is denser and has more O2 in it.

[Alant]

How 'Cold' is cold...we don't need that type of cold air from the air-con.

[Sleepengine]

regardless of how cold the air from the aircon is, it is still something like 20+ degree celsius.

i'm thinking this will at least help lower the temp of air from the engine bay by 1 to 2 degree

 

so i guess 1 to 2 degree makes no diff at the kind of temp the engine bay is at...

Edited March 15, 2007 by Sleepengine

[Seanboi]

if there is only a slight drop in temperature like 1 to 2 degree, den most of the ppl here wouldnt even do it.

[Sleepengine]

ok. thanks for the clarification

[Lancer78jas]

Bro,

 

Heat Shield is usually for Open Pod. Cos Open Pod does not have air filter box with air intake tude to catch air from outside. Therefore, having a heat shield will help to prevent hot air in the engine bay to reach to Open Pod.

 

As for me, I am using a stock air box with Simota Drop In. The air intake tude I took it off and replace it with a heat resistance flexi pipe and place it near by front damper to catch cold air from outside. Other than flood which I am wori, everything works well. bigger hole = more air = more power.....

[Conservative]

Personally I think the CAI is a bit overrated here in Singapore la.

 

Compared to a cold climate country like Japan where the ambient temperature is much lower than here, the difference it makes here may not be so great....

 

But at least better than nothing.

[Seanboi]

dun quite get wad u mean by abit overrated.

 

Well, it somehow works for me... Only scared floods. During rainy season, better remove ur CAI pipes.

[Conservative]

I mean, given the amount of attention it has, it doesnt really give a whole bunch of "power". Feel its marginal compared to a cooler climate where the temp difference is much more.

 

I guess lots of people swear by it because its one of the easiest and cheapest mods to do.....

[Dwoon]

hi gurus,

 

 

just wonderring abt how cold air intake works...

 

it seems to be working of the theory getting cooler air from cooler parts of the engine bay area or/and adding some kind of heat shield to prevent heating up of the air to the air intake box.

 

if this is a case, then why is it that we can't just draw some cold air from our aircon and feed into the stock air intake system. Is it because of these reasons?

1) the small amt of cool air from the aircon is too insignificant to make a difference

2) this increases the load of the aircon which offsets and performance gain

 

Normally, people do CAI which also removes the snorkus & resonator.... ending with a pod filter. The cold air is only one aspect of it... the other is the higher air flow due to lesser resistance once the resonator & snorkus is removed. This helps the engine breathe better, in addition to the slightly cooler air. The lesser restriction in itself helps alot.

[Sleepengine]

well... since it's "easy and cheap", then can't really expect miracles

[Sleepengine]

hmm... so it's denser air at larger volume per time... guess that's what makes the real difference.

 

now that u mentioned this, i wonder how much difference does the cooler air alone makes (and how cool is cooler? Ambient temperature external of the car?)