I'm not sure about the pro kit/race kit question, but i DO know that you can drive a true CAI in the rain. Just be careful to not A: submerge the end of the intake in a deep puddle and hit the gas, or B: drive around for hours in really heavy rain. Both of these conditions tend to suck up water from either the puddle or the street into the intake and then into your IM which will just end with lots and lots and lots of trouble for you my friend. PEEEEEEACE 