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Originally Posted by jcosta79
It could be. You absolutely may be right. But my point is (and I'm not trying to pick fights here) is that without actual data, it might not make any difference (or it might be worse) to have air intakes that snake down around the front of the car vs short ram intakes.
Other factors also need to be taken into consideration when choosing an intake such as piping length, diameter, material, etc... These things also affect HP which is what our ultimate goal is.
Ultimately what you are happy with is what matters, but please don't automatically assume that an intake will make more power just because it takes in air from an area of the car that seems to be cooler than another.
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Fair enough, but there are actual dyno numbers that have proven certain long tube intakes like the Gen 3's perform better over the short tubes. Temp readings, while useful data, isn't as important as the results in HP & Torque. I'm sure all the temp measurements were done to during the prototype stages of these intakes. If the results of those testings revealed hotter air with the long tubes, the power gains would have showed it and Nissan certainly would have chosen a different spot for the intake to get air from...which is why you don't see much of an improvement over the stock setup. The stock intake is pretty much a short ram that takes in air from a slightly "colder" source in front of the engine bay, above the front "mouth", not within the hotter engine bay.
Alot of variables involved, but colder air is more dense with oxygen...and more oxygen means more power.