Turbotune

Hi

Has anyone used a Turbotune box from Energy Tuning on a 2014 Forester Diesel, i have used this on my last two cars, Hyundai SantaFe and Skoda Superb, it seemed to give a power boost and increased torque when towing, as I already have the box, it is easily converted to the Subaru, but i was interested to get feedback from other users before i try it, thanks for reading