I wouldn't of thought of the air filter, thanks. I drive 60 miles a day to work, I use to go 70 mph, I have just resently dropped my speed to 60 (feel like i'm standing still) But.....my gas mileage jumped from 25.5 to 30.5 according to the computer. I couldn't believe it made that big of a difference. Where do you recommend getting the cold air intake system from and can a novice put it in?