Cold Air Intakes - Page 4 - Infiniti Q50 Forum
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post #31 of 53 (permalink) Old 09-08-2019, 07:02 PM
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That's honestly almost as important as the power you get from an Intake. IMO
Only reason I got em . The AMS intakes sound close to stock. BMS really make the wastegate/turbo spool very noticeable.

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post #32 of 53 (permalink) Old 09-09-2019, 11:30 AM
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If they have a direct path to air-flow outside and not pulling in air directly from the engine bay then they are technically a cold air intake, the air-box placement is really not all that critical
so long as air-flow is isn't heavily obstructed by it.
No one really addressed my main original point / question. If all it takes to be considered a CAI is directing outside air to an air filter/air box in the engine bay, then aren't most / all OEM intake systems CAIs?


Anyone have an OEM / stock "HAI" example?

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post #33 of 53 (permalink) Old 09-09-2019, 12:32 PM
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No one really addressed my main original point / question. If all it takes to be considered a CAI is directing outside air to an air filter/air box in the engine bay, then aren't most / all OEM intake systems CAIs?

Anyone have an OEM / stock "HAI" example?


Let me throw in a monkey wrench on this one - would that CAI still be considered a CAI if you're driving in Arizona or Nevada during summer? How much lower should the intake temp be vs when placed in the engine bay to be considered as CAI? What then is the true definition of CAI that most of us can agree on? Or CAI is just a mindset? :-)
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post #34 of 53 (permalink) Old 09-09-2019, 01:04 PM
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Originally Posted by ptatohed View Post
No one really addressed my main original point / question. If all it takes to be considered a CAI is directing outside air to an air filter/air box in the engine bay, then aren't most / all OEM intake systems CAIs?


Anyone have an OEM / stock "HAI" example?
For the most part nearly all modern intakes can be considered "cold air intakes", 20 years ago it was far less common and the air-box had little if any access to the cold-air from the outside
the engine bay.

There are a few reasons why the change may have occurred but I'd put my money on the fact that it was an easy way to increase power
while allowing for better MPG.

The advancements and control manufactures are granted by modern ECU's allow manufactures them to hit their Fuel economy targets without having to physically
restrict the cars intake/exhaust like they used to in the 90's.




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Let me throw in a monkey wrench on this one - would that CAI still be considered a CAI if you're driving in Arizona or Nevada during summer? How much lower should the intake temp be vs when placed in the engine bay to be considered as CAI? What then is the true definition of CAI that most of us can agree on? Or CAI is just a mindset? :-)
Well the engine bay is also going to be hotter in relation to the ambient temperatures outside the car, so in relative terms yes it would still be working as a cold-air intake.
Besides unless there is some type of phase changing or extreme cooling solution an air-cooled system cannot hit temperatures lower than Ambient.

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post #35 of 53 (permalink) Old 09-09-2019, 04:41 PM
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No one really addressed my main original point / question. If all it takes to be considered a CAI is directing outside air to an air filter/air box in the engine bay, then aren't most / all OEM intake systems CAIs?
Yes. Yet, we all continue to hear about all of these superior aftermarket "Cold air intakes...."

As BHC noted, any aftermarket intake benefits are going to be in the area of efficient tubing design and possibly more porous filtration. In both of those cases, they come with a drawback that a lot of enthusiasts don't care about.

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post #36 of 53 (permalink) Old 09-09-2019, 07:06 PM
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post #37 of 53 (permalink) Old 09-09-2019, 07:37 PM
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Now there's a redneck solution to air intake piping. I can't think of anything worse than that flex hose from an induced turbulence standpoint. No laminar flow with that arrangement.
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post #38 of 53 (permalink) Old 09-09-2019, 08:54 PM
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Hey...I don't judge...whatever their preference is their business.
Orientation, not preference.

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post #39 of 53 (permalink) Old 09-09-2019, 11:20 PM
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Well the engine bay is also going to be hotter in relation to the ambient temperatures outside the car, so in relative terms yes it would still be working as a cold-air intake.
Besides unless there is some type of phase changing or extreme cooling solution an air-cooled system cannot hit temperatures lower than Ambient.

Stop rationalizing it. It's not important lmao!
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post #40 of 53 (permalink) Old 09-09-2019, 11:23 PM
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Orientation, not preference.
Now, why do you have to drag the Asians into the conversation.
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