Just installed a K&N CAI to my truck. A little bit better throttle response and a lot better sound. This is my 3rd vehicle I have added a K&N CAI to. The other 2 vehicles both showed better performance and a little bit better fuel economy too. Hopefully the same will occur with the truck. And I love the fact that I will get a cost saving over time due to a lot more mileage and use out of 1 filter. Cleaning the filter is easy.