I have a 95 325i Cabrio and I need to replace the air filter soon, but I would rather put on a CAI for a little performance boost and a we bit better mileage. I don't want a full cold air intake like the ones that go down below your bumper as I live in MI and there is plenty of rain and snow and pot holes. I am looking for the best "bang for the buck" intake. I like the ones at www.bavarianautosport.com PN: 54-10171 which adds up to 31hp and up to 25lbs torque. So does any one have this and care to review?