Originally Posted by steimy
(Post 116533)
Interesting, i guess i have just always heard the opposite. It was explained to me that colder air was not only more dense...
Originally Posted by steimy
(Post 116533)
but therefor contained more O2.
Originally Posted by steimy
(Post 116533)
And that because you would have more 02 during the combustion you would produce more power. Although it would cause the engine to inject more fuel as well to accomplish this.
Originally Posted by steimy
(Post 116533)
And that this was the reason that cars were getting better fuel economy in the summer. Also that the colder more dense and 02 rish air produces a much more efficient combustion. Which is why it increases HP and torque.
But this is just how it was explained to me, i am by no means an expert on the subject. Thank you for the information, i guess some more research is in order. When the intake charge is above roughly 40°F, there really isn't a significant difference in how well fuel vaporizes in a modern fuel injected engine, however, below that temperature, the differences can become pronounced. Cars that have CAIs and/or have had the coolant plumbing disconnected to the throttle body (if so equipped) can see dramatic losses in fuel economy compared to an otherwise identical but unmodifed car when driven in the same environment. Make sense? |
Wow, lots of great info. So while i am getting it i might as well soak up some more if your willing.
So is it the fact that the CAI is bringing in a larger amount of air? That is the determining factor in why you are getting more HP and torque. Not the fact that the air coming in is actually cooler from the wheel well then the engine bay where your original air box is located. And to answer the one question you had above. I was told that due to the fact that colder air was more dense then hotter air that it would therefore contain more 02 then the less dense hot air. And lastly, if the air temperature is not a factor, why do they bother naming them cold air induction systems rather than just air induction systems? May be just a marketing tool and not really something you can answer, just curious. And on that subject why bother making heat shields for the ram air systems to try to avoid as much heated air from getting through? The one for my Miata is ram air as that is the only kind i have seen. And everyone says i should get a heat shield. Although i have not bothered to get one of just make one myself. Thanks again. |
Originally Posted by steimy
(Post 116561)
Wow, lots of great info. So while i am getting it i might as well soak up some more if your willing.
So is it the fact that the CAI is bringing in a larger amount of air? That is the determining factor in why you are getting more HP and torque. Not the fact that the air coming in is actually cooler from the wheel well then the engine bay where your original air box is located. And to answer the one question you had above. I was told that due to the fact that colder air was more dense then hotter air that it would therefore contain more 02 then the less dense hot air. And lastly, if the air temperature is not a factor, why do they bother naming them cold air induction systems rather than just air induction systems? May be just a marketing tool and not really something you can answer, just curious. And on that subject why bother making heat shields for the ram air systems to try to avoid as much heated air from getting through? The one for my Miata is ram air as that is the only kind i have seen. And everyone says i should get a heat shield. Although i have not bothered to get one of just make one myself. Thanks again.
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Thank you for taking the time to write all of the great info. I suppose from a company stand point it wouldn't make much sense for a CAI company to say "hey, buy our $250 product because we can get you about 3HP more than stock"
I know you don't get a lot of HP, i do however enjoy the sound of the engine, especially when matched to a nice Magnaflow CAT back system. Which the Mazda 6S has already and the Miata will have hopefully in the near future. And it sounds like getting a heat shield for the Miata may be a good idea just in case Thanks again. Some terms may be beyond me technically but i get it all in theory which helps too. |
Originally Posted by steimy
(Post 116570)
Thank you for taking the time to write all of the great info. I suppose from a company stand point it wouldn't make much sense for a CAI company to say "hey, buy our $250 product because we can get you about 3HP more than stock"
I know you don't get a lot of HP, i do however enjoy the sound of the engine, especially when matched to a nice Magnaflow CAT back system. Which the Mazda 6S has already and the Miata will have hopefully in the near future. And it sounds like getting a heat shield for the Miata may be a good idea just in case Thanks again. Some terms may be beyond me technically but i get it all in theory which helps too. |
the thing that really sucks the gerkin about the CAI is that i bought the best aem i could get, cost around five hundge and the the only check engine light i continuossly set is for the mass air flow sensor since it mounts right in the tube about 8 inches above the cone filter which intern leads to moisture making it through the cone filter up the tube and in contact with the sensor. if it gets too wet it will cause the car to run like complete **** until it dries the sensor wire. i mean the car runs diareah, if you hit 5000 rpms a bunch of lights will come on the dash right before the shift point and it can even cause the trans to mis shift. so when it comes to the CAI watch your ass, and your balls.
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Originally Posted by mazda6V6
(Post 117306)
the thing that really sucks the gerkin about the CAI is that i bought the best aem i could get, cost around five hundge and the the only check engine light i continuossly set is for the mass air flow sensor since it mounts right in the tube about 8 inches above the cone filter which intern leads to moisture making it through the cone filter up the tube and in contact with the sensor. if it gets too wet it will cause the car to run like complete **** until it dries the sensor wire. i mean the car runs diareah, if you hit 5000 rpms a bunch of lights will come on the dash right before the shift point and it can even cause the trans to mis shift. so when it comes to the CAI watch your ass, and your balls.
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Well, I got the AEM intake and it ran great. However, it caused my check engine light to go on. I could not figure out how to get it off. I then bought the K&N intake. The K&N intake was easier to install, however, the AEM may have had a very slight performance advantage. The K&N is very user friendly, so if you are mechanical inclined, I would go with the K&N. No problems for three years. Slight MPG increase and a small improvement in throttle response.
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Oye, here we go again. Folks, a CAI cannot in any way shape or form cause an engine to deliver better fuel economy. Not physically possible.
As for better throttle response, clearly it is a subjective thing, but unless one is referring to throttle response when the engine is north of say 5,000 RPMs, that one isn't even remotely likely either. |
i put the CAI on mostly for the sound quality because its hard to get a v6 to sound how i want it to without one, and i have no doubts that shipos information is all true but i also happen to know that my intake did increase my horsepower and especially my top end response. i did however lose a little low end torque but when i program my chip a little better ill get it back. it wasnt all bad losing that low end torque cause now when i take my car to the track i dont waste a half second chirping the tires from the start. plus the car sounds F N cool as **** now. it did screw up my gas mileage slighly to but its worth it to me.
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