Review on K&N Cold Air Intake Kit: Boost Horsepower & Performance: 50-State Legal: Fits 2000-2004 CHRYSLER/DODGE (300M, Intrepid SXT, Intrepid)57-1522 by David Sanchez

I purchased this K&N kit through Revain and not only was pleased that I was able to purchase it for significantly less than elsewhere, but it was easy to install and I noticed an increase in MPG. Since I drive over 150 miles daily, I track mileage clearly and have noticed a slight increase in mileage. I think I can recoup the cost in about a year. The engine does sound a little rougher, but you have to really listen to it and know how the car sounds before you can tell. As for the horsepower, I haven't really checked it other than that there's no lag on the line when starting off. I'm happy with the kit and will probably buy another one for my wife's jeep.