In reality, most cars are CAI with the intake in the lowest parts of the bumper. The weak link isnt the resonator but rather the corrugated tubing going to the throttle body. Yes, the resonator contributes some, but not as much as you think.....
CAI really shines when the ambient air is stationary in the engine bay. Once the Ram effect through the grill and the sucking effect of air up into the engine bay from low pressure lift resistance comes into play, the benefits of CAI vs. Shorty are nil in terms ofair temperature however.....
even tho your ass won't feel it, the Shorty velocity stack is tuned more for HP whereas the CAI intake tube V.S. is conducive to torque. Therefore, the Shorty is typically the application for better at-speed performance and the CAI is the Draggers friend.
But, really, does $150-250 an NSX make anyway?