I think there is a small difference
Reviewed By Jesse G (Burlington, CT) Reviewed for a 2010 Ford Explorer —12/14/2013 5:59 AM
Comes with some great video instructions. Installation took a little longer than with other programmers, but that could be the car (car dashboard was unnervingly active during installation). I opted for the "premium" tune. Overall, I think the gas mileage went slightly up, and I feel a little bit of a power difference. Even if the promised 29 HP is accurate, the value in this product is the ability to read trouble codes, as the performance increase is mild.