Hey everyone. Just bought my 2006 Wrangler with 41000 miles. Was really happy when I bought it 5 days ago but now I struggle trying to improve the gas mileage. May not help that the dealership put the wrong size tires on it. 2" to small. and over an inch narrower than the proper size. 1st gear in this 6 speed jumps to 3000 RPM really fast. I love Wranglers they are great vehicles but my 91 got better gas mileage than this 06. I'm hoping to resolve all of this by Monday when I take it back to the dealership for service. Could the tire size be the cause of the high RPM and the bad gas mileage. I'm getting 10 MPG right now when I should be seeing at least 15. Has anyone tried anything that has worked? I will be cleaning my Mass Airflow today. Hope I get to keep this one I have always loved the 4.0 L6. Any advice is appreciated. I don't want to take my Wrangler back. But I can't handle 10 MPG in my daily driver.