Has anyone heard if AEM or Injen are going to release a CAI for the 07?

 

spoke to stillen about a week ago theres one in the works along with sways and strut tower braces

 

The only thing your going to gain with a CAI on this car is more noise and less money in your pocket. The intake is very well designed from the factory, the aftermarket companies just don't have the resources to out engineer it, I suspect you may even lose horsepower at higher speeds with an aftermarket CAI. Ultimately time will tell, but having looked at the factory intake very closely they really didn't make any mistakes on it.

 

And you know this how? Not trying to call you out on anything, but that information you are speaking about is based off of the older models. On the new VQ motor it might provide some great gains, but who knows...no one has tested a CAI on the new VQ considering none are in production.

-sean

 

I agree with Audiophile. With two intakes, it's very easy to achieve max airflow for the engine. Each side doesn't have to flow as much so it's very easy to achieve max airflow. I doubt there is much room for improvement, maybe with filter media..

 

Possibly who knows though? Just because it has 2 throttle bodies it is still restricted by the ECU to only allow so much air flow into the engine.

-sean

 

What? That makes no sense? By your logic then, replacing the twin intakes with aftermarket ones won't matter if the ECU is only allowing so much air in ??

The way to make power is to move as much air as possible thru the engine. Why would they try to restrict this? They improved on it by having dual intakes to move additional air over the previous setup. This engine is already optimized from the factory to make power. The aftermarket will come out with things to sell.. but that doesn't mean it will produce any more power than stock.

 

No, your statement does not make sense. The ecu is going to control how much air is going to be allowed in the engine (from your MAF). Just because the car has dual intakes doesnt mean its getting twice as much air, it just means its not having to "work" as hard to get it. The engine is also going to be restricitng how much air is going into the engine to meet emisions. that is why its restricted.

I guess one thing that i forgot to mention was a tune. If you add 2 CAI and tune the car its going to gain so much HP over just the stock box.

-sean

 

now now children.....assuming it DOES help out, its not worth the price. you dont have ONE intake but 2! why spend so much for so little gain? i bet swapping out the stock filter for better ones would be more benifical (and finaciall more logical) then buying a cai.

 

Think about it first..

The MAF tells the engine how much air is flowing so it can supply the correct amount of fuel. At WOT the engine is going to flow in as much air as it needs to fill the cylinders.
Both throttles are wide open. The restriction to the amount of air coming in at WOT is going to be the amount of air the engine itself can take in and move out. The restriction is not going to be from the dual intakes, not in this application.
Emissions will not determine the throttle positioning. This is all calculated and controlled by the size and design of the engine and the ECU fuel maps. The engineers know the volume of air the engine can handle at WOT. Emissions is designed for this and has no effect on the throttle position

 

If you thought that i was saying that the restriction is comming from the dual intakes then you misunderstood me. Also, as for emissions hell yes it controls how much air is being taken into the engine....it is also because the factory tuned ECU is only going to allow so much fuel into the motor so with this in mind they can only let so much air into cylenders to mix with the fuel.

Now if you add a CAI and a tune then air flow is going to increase significantly...if you read my last post i added in there that i forgot to mention a tune.

-sean

 

Then why are you asking about aftermarket intakes?

I disagree.. an example if you will.. Before drive by wire (DBW), which is new to most cars. The throttle is cable operated. You floor it, it goes into WOT. Emissions still do their thing by regulating FUEL and using the proper fuel trim maps according to the MAF, TPS and AITS. HAS NOTHING TO DO WITH THE THROTTLE OPENNING. The engine size. intake manifold, head flow determine the amount of MAXIMUM air the engine can see.
DBW just removes the physical linkage. It still is controlled by your foot.
Again.. emissions is controlled by reading the sensors and adding the proper amount of fuel. At WOT, the ECU usually stops reading sensors and goes by a pre-programmed fuel map which is designed for the engine. The benefits of tuning come when you make the engine breathe better by head work, cam, headers.. then the tune can take advantage of the better breathing.

Nope... The engine can only digest so much air. A tune WILL change timing, fuel maps, valve lift, etc.. It will not change the amount of air the engine is capable of digesting.. that is determined by cyliner size, head flow, valve size... etc..

 

ok, and in order to have more fuel you have to have what? More AIR!!!

-sean

 

If i am remembering correctly, this whole argument is over will dual CAI add more power to the car? I have not inspected the 07 sedan engine upclose, but if it is designed anything like the old one then yes it will add some more power. end of story.

-sean

 

You obviously don't understand the basics.. here are your postings

Wrong.. see my above response

Wrong again... totally

Wrong.. It controls how much FUEL is being added to the air depending upon throttle which at WOT is limited to the volume and flow of the engine.[/QUOTE]

Wrong.. The 07 look pretty much optimized with the dual intakes. It already breathes outside air. I doubt a safe tune will incease power much at all. Not until you make the engine flow more air as explained above in previous post.

and your last post showing you really just don't know...