Originally Posted by ~37oZ~

I remember back in my Z32 days, the first style of CAI intakes were designed with one intake entry much like the Takeda. They many years later found the car fighting for air causing turbulence as the car tried to feed each side of the engine with air and moved to a dual setup for the intakes eliminating the fight for air.

So a part of me wonders how efficient the Takeda is because using the one intake vs the stillen. Stillen I'm sure remembered this from their Z32 knowledge and went with a dual filter design for this same reason I would think. If Nissan felt it was a good idea to have the car feed air from one filter they would have designed the stock air box this way but instead went the route of twin air filters. There must be reasoning for this so I would give the thumbs up to the stillen intake from a functional/efficiency point of view if this holds true about the Takeda.