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Originally posted by cas:
Most that I've seen are at the same height and same distance from the engine as the old air box (filter housing), only they're drawing air from under the hood rather than outside air.

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Originally posted by 4MUL8R:rovided
I had an underhood air cleaner by K&N once. Horrible noise. Horrible MPG. Horrible MAF contamination. I swapped it back for stock right quick. It was on the truck when I bought it. The brother of the original owner was so excited to get the K&N from me, as he always thought his brother's truck was so cool.

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Originally posted by PowerSurge:
Most modern fuel injected cars are already equipped with a cold air intake from the factory.

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Originally posted by bigdeal:

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Originally posted by PowerSurge:
Most modern fuel injected cars are already equipped with a cold air intake from the factory.

Nope. Until you introduce something like an air-to-air or air-to-water intercooler into the equation that actively attempts to cool the intake charge, all you have is a simple air intake. And whether that air intake is sucking hot air off the pavement or out of the engine bay, the air its introducing into the intake is going to be hot.

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Originally posted by PowerSurge:
Even a factory air intake that brings in 90 degree outside air sucked in through a fender well is much cooler than engine compartment air from an aftermarket “CAI”.

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You’re not going to tell me anything I don’t know already about how to get more power from them.

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Originally posted by Skins2881:
Maybe I'll buy an aFe dry filter if anything.

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Originally posted by bigdeal:
When you plant thermostats in both those locations and fully document temp ranges, then and only then would I entertain a debate that one location is "significantly" better than the other. Once the vehicle is moving at speed, air is passing through the grill and other air access points to the engine bay helping to sweep heat out of it. Doesn't make it 'cool' by any stretch of the imagination, but it does make it 'cooler'.
Again, the temp differential between air sucked in off the pavement and out of the engine compartment will be negligible for the ECM to compensate for.

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You’re not going to tell me anything I don’t know already about how to get more power from them.

I have no intention of attempting to teach you or anyone else here about engine building or tuning. But if you want 'cold' air, add a methanol injection system. You want 'cool' air (assuming an ice tank is not utilized) add an intercooler. Anything else is simply a basic air intake and offers little to HP or fuel efficiency numbers.

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Originally posted by PowerSurge:
From the factory. Do you really think that they weren’t designed and engineered for this? The automakers aren’t going to waste money on ducting for outside air if it weren’t necessary for more power and mileage.

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Originally posted by bigdeal:
I always love the arguments surrounding CAI's. Most all of them are just silly. Here's a hint. If you live in Florida, Arizona, Texas, New Mexico or some other really hot state, the temp differential between your stock air box picking up superheated air just off the asphalt pavement, or some so called CAI sucking in hot air from the engine compartment is negligible. The CAI isn't going to add any real HP or fuel economy to the equation. The only benefits I can see is 'maybe' slightly less restricted air flow than the stock airbox, and/or a bigger, easier to get at and clean air filter. Short of that CAI's are little more than engine compartment decoration.