No, your driver modes such as ECO, NORMAL, SPORT/DYNAMIC they are all just that driver settings. This are adjustment setup by the manufacturer to give you on the fly adjustment to your driving experience, for instance ECO mode will only give 60%throttle to the engine when your foot is full down and steering gearbox will feel relaxed and soft, then in SPORT/DYNAMIC mode the throttle will be around 90% when your foot is only halfway down and again the steering and gearbox will be much sharper. That being said your engines ecu file remains unaffected in any mode and as such you will have more power in ECO mode the system will just adjust to make you still feel the same relaxed driving experience.