Drop in filters are probably on Par in terms of performance gains vs the K&N short ram. Some short rams have even shown to net zero gains on the dyno. It's not that its bad or poorly designed, its that the stock intake setup was designed well to begin with. The long tubes have been dyno proven to show results across the rpm range.
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Originally Posted by jcosta79
What is "extremely hot air"? How much colder is the "much colder air" vs the "extremely hot air"? Has anyone actually measured the IAT of a long tube setup vs the K&N?
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The K&N short ram has the intake pretty much open to the engine bay.
The Gen 3's and other long tubes filter elements, are almost entirely shielded from the engine bay.