Thats good info. I can't comment on how this one affects performance since I haven't completed the install but i'm eager to find out.
Another possible option to increase airflow:
From the Airflow website:
"All our current Cold Air Induction Snorkel kits are supplied with this Air Ram, which provides 3.8 times free air to the engine. However, some customers prefer a lesser performance to the benefit of a more pleasing look… So, by popular demand, we have re-released the square Air Ram. Despite its lesser free air performance (only 1.85 times), this Air Ram may be more pleasing to the eye when associated with a “squarish” vehicle. So the choice is yours, looks or performance, Airflow Vector has it all!"
Since the VX isn't square, the new style air ram could be purchased to increase air flow & change the look. I'm thinking about for it myself...