From what I understand...a CAI (Cold Air Intake) is "supposed" to increase your Hp...I'm not sure on the specifics of how this is done except for the general idea of how colder air is better for engine performance...
I apologize if I sound incompetent but I don't want to overstep my bounds and sound like a know it all...
I'm sure a SRAI (Short Ram Air Intake) is based off of the same principals...
CL