I have it done on my Spec-V and I live in freezing North Dakota. There are no drawbacks from doing it, but there are also no proven power gains. There is proof that it cools the intake air from anywhere between 10 and 20 degrees. Cooler air is denser air, denser air has more oxygen. More oxygen, more power. Do it if you are trying to squeeze the most out of the car. It is free...