I switch from the K&N FILTER in the box to the whole system what a big difference.
I drove Friday a hour and half and Saturday and Sunday a good distance and to work Monday it just hit the half way mark.
I did that trip on Friday before and it took a half of tank. The K&N SYSTEM IS AWESOME AND THE PICKUP.

 

I am on my second tank of gas.. I filled up at 180 miles but with a half day of climbing hills I expected that.

 

Just filled up new 2007(manual transmission) for the first time. 18.19 MPG. 50/50 highway/city.