I talked with Michael about a week ago and he said to help mileage turn my Edge Comp all the way up. I kinda thouhgt he was crazy at first but I went to my girlfriends house on Sunday which is a 100 mile round trip. i was driving with the tailgate down and was showing 19.5 avg on the factory trip computer but I have bigger tires so I know that it is wrong, just not sure if it is better or worse than what it shows. Been looking at getting the SG2. Any ideas? Just ordered the BHAF to put on and hope that helps some with mileage.