07 rubi 37s winch and a few extras aev programmer mileage really sucks mostly highway 17 miles to and from work each way at 67 mph 206 miles to 16.6 gallons . have 513 gears same set up as brothers but he's getting 15.9 all around whats your opinions thanks for the help my mileage was 12.4 thats not near as good. I can't even go 300 per tank .any help or comments appreciated.