I installed mine the week it came out and im down to 22mpg avg from 25mpg avg. I drive a mix of highway and city everyday. Staying consistent with how I drove before the intake install. I emailed PRL and they told me 2-3 mpg loss isnt a big deal. That basically the car has more power now so it takes more fuel. I cant see 1 bolt on being that much more power ,needing that much more fuel . Has anyone else installed this product or have any input on this?