There are a lot, a lot of people who have put CAIs and short rams on their Vibes and Matrixes. Nobody seems to be taking any special precautions to keep water out of the intake, regardless of the weather, and no one has posted any water intake related problems, so, it seems to me that the risk of water in the intake is pretty low. A short ram would probably put the intake at about the same height off the ground as the stock air intake. I asked a similar question about he Injen warning in a different thread and was dismissed as injen corporate CYA.I think you'd be fine with either a short ram or a CAI, and would have no water problems. However, it's your car, and it wasn't cheap, so you need to do what's best for you, regardless of what you hear on the internet.I have not installed either a CAI or a short ram, or a K&N drop in. For me, gas mileage is more important than power, and nobody has ever posted any data to verify the claims that the new intakes increase fuel efficiency. Then there's the secondary effect on fuel efficiency, if my vibe had an extra XX horsepower, then I'd use it, and my fuel efficiency would really suck. I've already spent over a grand on gas for the nine and a half months I've had my vibe. The vehicle I traded would have cost me 2500 for the same miles, so I'm happy.A couple of members have bought AEM short rams from
http://forums.genvibe.com/zerothread?id=6254. when one of them installs it, we'll get some good feedback on the install and effect on performance.