Cold Air Intake

[westvibes]

Will installing a cold air intake on my 2009 Hyundai Genesis 3.8L, improve its fuel efficiency?

 

[rogerlange]

anytime you let the engine breathe free you will get better milage

 

[sleeksilver]

Theoretically it should, just make sure you have a good filter.

I bought a $65 CAI off of eBay as an experiment, and it went on as quickly as it went off. The fitment was terrible, as expected for a $65 part.

 

[WHYTE5OH]

Will installing a cold air intake on my 2009 Hyundai Genesis 3.8L, improve its fuel efficiency?

Probably not because you will be punching the throttle all the time to hear the nice sound

 

[RSPEC429]

No. Our vehicles already draw in air from outside of the hood. I like my factory CAI just fine.

 

[Audio]

No. Our vehicles already draw in air from outside of the hood. I like my factory CAI just fine.

Just a bit of clarification here, but "Cold air intake" not exactly meaning "cold air" literally, but in terms of "aftermarket intake" which I think he meant: Yes... a less restrictive, and freer flowing intake would, theoretically improve efficiency.

To add to that though: The thing people don't always understand is that opening things up in one little spot isn't always all it takes to get noticeable efficiency or power increases. Sure, an intake "should" help for sure, but until you start doing more like throttle body size increase, a freer flowing exhaust, a proper tune etc it's not going to be something you see in any major way at the pump.

 

[RSPEC429]

Just a bit of clarification here, but "Cold air intake" not exactly meaning "cold air" literally, but in terms of "aftermarket intake" which I think he meant: Yes... a less restrictive, and freer flowing intake would, theoretically improve efficiency.

To add to that though: The thing people don't always understand is that opening things up in one little spot isn't always all it takes to get noticeable efficiency or power increases. Sure, an intake "should" help for sure, but until you start doing more like throttle body size increase, a freer flowing exhaust, a proper tune etc it's not going to be something you see in any major way at the pump.

I guess my sarcasm was overlooked.

I've always viewed CAI, and K&N filters for that matter, as great ways to allow more dirt into the engine. I've never seen the draw of having an open element filter sitting in a nice, baking hot engine bay. Just stick with the stocker and save your money.

 

[427435]

anytime you let the engine breathe free you will get better milage

Maybe if the car has a carbureted engine (remember them?). In a fuel injected engine, with computer control, the amount of fuel injected is based on the actual amount of air that is entering the engine as measured by the MAF sensor.

 

[Audio]

Maybe if the car has a carbureted engine (remember them?). In a fuel injected engine, with computer control, the amount of fuel injected is based on the actual amount of air that is entering the engine as measured by the MAF sensor.

Right..... so allowing more, denser air in at once will allow the controls to provide the right amount of fuel more efficiently. You can argue that opening up the intake/exhaust to allow better flow doesn't help efficiency or power on a fuel injected engine, that's fine. Just understand there is hard proof that you're 100% wrong.

 

[84FordMan]

The gains on the 4.6 Tau from a cold air intake are minimal (On stock tune), almost to the point of writing it off to dyno operator error.

With the tune, it is a completely different story and I will explain at the end.

If you are not getting tuned and more or less want just the sound, I would recommend deleting the flap in the air box, cut out the carbon filter in the box lid, high-flowing media filter and purchase the Snoopy Panda fluted resonator delete plugs. It is a well insulated system and provides cooler real world IATs than any "cold" air intake.

Concerning tunes and cold air intakes, the stock intake system is restrictive and the R2C system is not much better. A minimum of a 4" diameter intake is required to maximize response to fuel and timing changes. Running 3.5" cost me 12 horsepower at the wheels, compared to 4".

Ideally, if the accordion feed tube was larger and smooth (Thinking an air duct running from it down to the lower grille, similar to European cars) and the tubing between the box and throttle body was 4" diameter and smooth. Then you would have a far superior intake system to anything available in the aftermarket.

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[427435]

Right..... so allowing more, denser air in at once will allow the controls to provide the right amount of fuel more efficiently. You can argue that opening up the intake/exhaust to allow better flow doesn't help efficiency or power on a fuel injected engine, that's fine. Just understand there is hard proof that you're 100% wrong.

Where did you get your engineering degree from and how many internal engine classes did you take?? And how many years have you professionally worked with engines???


The MAF sensors take into account the coolness of the air-------the M stands for mass! The computer then adjusts for that.


Cold air may help max hp-----------------it will not change mpg in a computer controlled engine.

 

[Audio]

Oh we're one of the high and mighty "I got degrees and clearly you didn't" people now? Well I'm going to keep my self respect and bow out. Not because you're better than me, but because arguing with someone who acts as such is pointless. Good day, captain big boss high and mighty great one.

 

[427435]

Oh we're one of the high and mighty "I got degrees and clearly you didn't" people now? Well I'm going to keep my self respect and bow out. Not because you're better than me, but because arguing with someone who acts as such is pointless. Good day, captain big boss high and mighty great one.

Well that happens when you repeat some old shade tree myths to someone that has spent a life time working (and learning) about engines------and call me wrong. Hope you learned something about how modern, computer controlled engines work so you don't make the same mistake again------------or telling someone he's wrong when your knowledge is clearly deficient. The fuel systems of today's cars are much different than yesteryear's carbureted engines.

 

[Audio]

If you make an engine breath easier, including computer controlled fuel injected engines, it will more easily produce power, and of course there is that increase in power from it. If you adjust your throttle input and driving habits to compensate for that, you will get better fuel economy. An intake alone will most likely do next to nothing, if anything at all, but the principals of better flowing intake/exhaust are universal even with computer controls. I'm fine with you having worked on cars your whole life(as have I), and even all your degrees and what have you, but this is something that I know is a fact, and I don't get how someone who claims such high knowledge would dispute something that has been proven time and time again. And yes, on fuel injected engines.

 

[Sluh]

Intake is tuned already to work at different rpms to improve the flow. You can see two resonators at the plumbing from the filter box to the MAF and variable intake manifold geometry (4.6). If you think that dumb 8" pipe to the outside air would improve the fuel efficiency and power, why factory engineers bothered with all this stuff, when they fight for every 0.01mpg?
And BTW, your intake is already as cold air as it could be, unless you want to put the steamboat chimney 4' tall above the car.

 

[427435]

If you make an engine breath easier, including computer controlled fuel injected engines, it will more easily produce power, and of course there is that increase in power from it. If you adjust your throttle input and driving habits to compensate for that, you will get better fuel economy. An intake alone will most likely do next to nothing, if anything at all, but the principals of better flowing intake/exhaust are universal even with computer controls. I'm fine with you having worked on cars your whole life(as have I), and even all your degrees and what have you, but this is something that I know is a fact, and I don't get how someone who claims such high knowledge would dispute something that has been proven time and time again. And yes, on fuel injected engines.

I agree that an intake that flows better adds power-------------but not mpg in a computer controlled, fuel injected engine. The sensors on today's cars KNOW how much air (mass) is coming in with whatever throttle setting you are using. THE COMPUTER than determines the proper amount of fuel. And that has been proven time and time again on real dynos----------not butt dynos.

 

[427435]

Intake is tuned already to work at different rpms to improve the flow. You can see two resonators at the plumbing from the filter box to the MAF and variable intake manifold geometry (4.6). If you think that dumb 8" pipe to the outside air would improve the fuel efficiency and power, why factory engineers bothered with all this stuff, when they fight for every 0.01mpg?
And BTW, your intake is already as cold air as it could be, unless you want to put the steamboat chimney 4' tall above the car.

Exactly!!