I seem to run in the rain everytime we go to the Dragon meet. I really don't like the rain, but the dual from needswings works just fine....they are K&N filters and are all but water proof. You could take one off after a run in the rain, and not see one drop of water on the inside...the sock they make are more for the off roaders, keep heavy mud and debree out...but you can run them on your car without a problem as well....the cai, is the 1st mod you would want to do, and probably the most rewarding. As for those who drag race, we will all always be searching for another 1/10th off our times no matter how fast we get. It's just the motorhead in us, never satisfied with our times...need to go faster quicker....lol