most cold air intake kits for most vehicles are a waste of time and money. and the added sound they can generate is a bad thing.
most all vehicles have the air filter located in one of the front corners and the air it intakes comes from outside, its a cold air intake already.
most vehicles have the hose leading from the throttle body to the air filter having ribbed design, or a chamber off to the side. as valves open air begins to rush through that hose, and then the vavle slams shut in the air's face, the air needs somewhere to go. the ribbings and/or chambers give the air somewhere to go, without them you get the sound of air being forced backwards out of the intake.
you could get just as much power by simply installing a high flow filter, such as k&n makes, in place of the normal air filter in your existing cold air sucking filter box for less money with less effort.