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Old 08-30-2013, 04:30 PM   #21
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Member#: 142029
Join Date: Feb 2007
Chapter/Region: Tri-State
Location: Lehigh Valley, PA
2013 Forester
2008 350z, 1991 Miata BRG


Originally Posted by TheWRXinMe View Post
I still think on turbocharged engines the gains from a CAI are extremely minimal or non existent in comparison to an SF intake.... Ok let's say you have a 10 deg difference in IAT... Once that air passes through the turbo I would bet that difference is even less.... I have not found any data that proves this wrong or right, but for those that have dealt with compressing and releasing gases know how quick and powerful the temperature change is... This temp difference post turbo will have such a minimal impact on power output with how hot the air is to begin with... This is why IC's are your workhorse for cooling... Now once you get into the heavily modified area and are trying to squeeze everything you can out then this would make a difference but in reference to typical Stage 2+ cars the dif is negligible....

If this weren't the case then I bet Cobb would have made a CAI....
The thing is, there usually isn't a 10 degree difference between a hot air intake like the SF and any cold air intake or stock airbox... more like 50-100 degrees in stop and go traffic. Hotter air coming in is never a good thing. Colder air is always better.
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