I have a 2010 5.4 with 41k miles... Sticker was 41190... Options are trailer controller, bed graphics orange paint and interior... I have a lot of stuff done to get good mileage. long tube headers with high flow cats, I made my own intake for the air system to draw consistent intake air, a 5star tuner with 87 econ, 87 tow and 93 perf tunes, still have a few things I want to do... Best I have done is 20.2 at 55mph( I did just to see what I could get) from upper Mi to the lower part. I just drove to Mi from Va and got 17.3 combined round trip through the mountains 1600 miles total and about 150 city miles... The dealer offered me 32k if I put the stock bumpers back on...
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