Review on K&N Cold Air Intake Kit: Performance Boost for 2004-2009 Dodge/Chrysler 5.7L V8: 50-State Legal, Horsepower Increase: Durango, Aspen Compatible: Model 57-1539 by Samuel Hansen

. Ok when my husband told me to buy this for my Hemi Durango to help with fuel economy, buy the essentials while towing our trailer I said ok and proceeded to place an order. I read the reviews and was so excited to read it would make a lower pitched noise in the car when I asked it to change the exhaust to make it sound low and growling. So we got the part, my husband installed it in about 20-25 minutes and told me to start the car which I did and nothing changed. :( Wahwahwah. My misunderstanding was that the noise would be constant. What he corrected me was that the noise would only be deep and purring when the car was under load. When you hit the road and hit the gas, is it's that damn deep, rumbling and LOUD of course. No matter how cool it sounds, it's insanely loud in the car. Not when you gently accelerate, but when you step on the gas or tow the car under load. MPG changed immediately. My rating is Nothing for you cogs who already know all about it. And for the ladies or one person who might not know. :)