is their difference between the Geman and Americain version? My car has 160 HP. I would like to make a tuning, especially for torque lower RPM. I've read any posts, but I'm not sure which one is tehe best for me? I'm preferring a mapped ECU, but it is not possible to get one for my car, because it sits on the left side the battery(in front of car), with 2 same plugs on it! I had a RaceChip from Germany, but I was not satisfied for that. Maby I schould longer use it, because it must learning...?