There is a patent issue brewing that we in the car hobby need to pay attention to and act upon, the right to modify the code that OEM's use to control the automotive systems. These include the powertrain, of course, but extend to other areas like climate control, internet, entertainment, anything computer controlled. OEM's are trying to prevent any third parties from being able to make changes of any kind claiming they actually own the code and don't give up ownership when you buy the vehicle. In other words you may own the car but you don't own the software that runs the car. There is a petition you can sign, https://www.eff.org/deeplinks/2015/04/automakers-say-you-dont-really-own-your-car, and for the sake of ownership rights I suggest to educate yourself and act accordingly.