Slight necropost from me here
The standard inlet on the 1GFE is designed that way for a reason and I believe that reason is positive intake pressure.
At speed, I'm pretty sure the inlet tract will bring the preshaaaa, albeit only at speed.
This is also one of the main reasons why "cold air intake kits" are bad for your IS's performance since you move form a high-pressure-at-high-speed-system to a low-pressure-at-all-speeds-system.
Just my two ummm... pence.