Question: Why Japanese don't use CAI?
- Thread starter OceanPark
- Start date
7
70
I'll probably get shot for this answer, but it might surprise you...
Interestingly enough, the stock intake isn't bad!!! I would suggest that you go read some articles off of Autospeed's web-site (Australian on-line magazine that has some free tech articles). The two in particular are about siting air intakes and about removing negative pressure from the intake system.
The one about negative pressure, the guy found out that the stock intake was actually pretty good, just some minor things needed some help.
I've posted the links before, but no one really read the articles, little alone the post.
And because nobody believes my answer, I will post them again:
http://www.autospeed.com/A_0629/P_1/article.html
and...
http://www.autospeed.com/A_1023/page1.html
Interestingly enough, the stock intake isn't bad!!! I would suggest that you go read some articles off of Autospeed's web-site (Australian on-line magazine that has some free tech articles). The two in particular are about siting air intakes and about removing negative pressure from the intake system.
The one about negative pressure, the guy found out that the stock intake was actually pretty good, just some minor things needed some help.
I've posted the links before, but no one really read the articles, little alone the post.
And because nobody believes my answer, I will post them again:
http://www.autospeed.com/A_0629/P_1/article.html
and...
http://www.autospeed.com/A_1023/page1.html
I'm guessing that we just haven't really seen any. I'm sure they use them. With Turbo'd cars a CAI is pointless in my opinion. In theory, the cold air being sucked in through the intake will be hot as soon as it hits the turbo since the turbo uses hot exhaust gases to spin the turbine. The topic of using CAI's on turbo'd cars was been a hot topic on the I-Club. Of course, the only way to test this theory is to attach a temperature sensor before and after the turbo to see if their is any temp difference.
I was talking about N/A car though (ex: Miata, Civic, Celica, or ITR). Even if it exists in Japan, it must not as popular as we do here.
However, if you look closely, sometimes they attached a custom tube to the stock airbox. I think the idea is pretty much like the CAI, but so far, I don’t spot any fancy cold air intake system on Japanese magz.
Maybe they just don’t care about the 5hp? Or CAI doesn’t worth it?
However, if you look closely, sometimes they attached a custom tube to the stock airbox. I think the idea is pretty much like the CAI, but so far, I don’t spot any fancy cold air intake system on Japanese magz.
Maybe they just don’t care about the 5hp? Or CAI doesn’t worth it?
NC_MP3: Those intakes on the Turbo Supra only helps to breath better, but it is not a Cold Air. If more air flow in, that mean more air will be compressed, and it certainly will have higher output than N/A. But cold air is useless for turbo car, since it re-use the exhaust gas, which already been heat up.
Correct me if I am wrong.
Correct me if I am wrong.
The air is compressed during the compression and power stroke in the motor. The heat is a chemical reaction of the air/fuel and spark in the motor and that is where the majority of the heat comes from. The exhaust gases from the motor are very hot which in turn heats the exhaust manifold. A turbo uses those hot gases to spin the turbine. So we're all right.
Oh yeah, I saw a few cars with CAI in Japanese car mags at BozzSpeed today.
Oh yeah, I saw a few cars with CAI in Japanese car mags at BozzSpeed today.
ChrisS, I've read those autospeed articles before. Autospeed is probably the best magazine available for enthusiasts, they do A LOT of practical testing and tuning cars.
I agree that CAI aren't worth the money. While they may be increasing the size of the pipe, they are also moving the filter further away from the engine. So there really isn't much gain for the engine to see.
I'm also not fond of the annoying noise that they make. (I know I'm gonna get flamed now!)
Have you considered just upgrading the stock piping to larger pipes and retaining the stock airbox?
I agree that CAI aren't worth the money. While they may be increasing the size of the pipe, they are also moving the filter further away from the engine. So there really isn't much gain for the engine to see.
I'm also not fond of the annoying noise that they make. (I know I'm gonna get flamed now!)
Have you considered just upgrading the stock piping to larger pipes and retaining the stock airbox?
7
70
I'm looking at my options. Research, research, research...And then when I'm done with that I'll do some more research.
Once I'm done with that I'll come up with a definite plan and go from there.
Once I'm done with that I'll come up with a definite plan and go from there.
