If I saw your IC I would think only half is being used, be it the dirty side only saying that because with the ARE scoop
there are vanes underneath to direct a pecentage of the air to the front of the IC. With the OE scoop air is forced
only to the rear. Saying that I believe only the Dirty part of your IC is being used, so not very efficient it could be better
The ARE web site shows how efficient your IC can get,, what with a tigged IC to fitting an ARE scoop to even fitting a fan