Desnorkel vs Cold Air Intake

[JFP in PA]

Originally Posted by maytag

Jfp of course your theory is sound, the question remains: How effective is the "shroud" at blocking the heat? As far as insulating qualities of the materials, clearly the thin abs used by the factory for the intake tube and airbox is not an efficient insulator. But it is somewhat sealed from the warm air of the engine bay. So how effective are the panel and gasket in comparison?



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The air in the engine compartment on these cars is hot, that is why they put a fan in there to aid cooling. Hot air does not make as much power as cold air, period. That is why Porsche put the factory cold air system in in the first place.

[maytag]

Originally Posted by JFP in PA

The air in the engine compartment on these cars is hot, that is why they put a fan in there to aid cooling. Hot air does not make as much power as cold air, period. That is why Porsche put the factory cold air system in in the first place.

agreed.. but ignores the question: how effective is the shroud/gasket? The air travels the same path whether into the factory system or another filter, IF that filter is effectively blocked from drawing air from another source. Perhaps I'm missing something obvious, JFP, and that's why I keep coming back to the same question, and you keep giving me the same answer, haha. My knowledge on this car is so far only about surface-deep. I haven't had any time to even crawl under it yet.

[JFP in PA]

Originally Posted by maytag

agreed.. but ignores the question: how effective is the shroud/gasket? The air travels the same path whether into the factory system or another filter, IF that filter is effectively blocked from drawing air from another source. Perhaps I'm missing something obvious, JFP, and that's why I keep coming back to the same question, and you keep giving me the same answer, haha. My knowledge on this car is so far only about surface-deep. I haven't had any time to even crawl under it yet.

My point is that you have to have a sealed air path from the outside to the throttle body; some of the posted photos show open filters, which are going to suck in hot air with out that seal, losing HP. Most of the jury rigged attempts at this we have see leaked air like a sieve......