My friend told me that he took his VW Passat to a racing shop and had the computer setting changed to make the car more fuel efficient. He said that all cars come with factory settings that allow them to be shipped to countries that have less refined fuel. So, cars that go to places that have high quality fuel have programmed settings that allow for less fuel efficiency. Is this true?
If it is true, what kind of shop (more specific than "racing") would I take my car to and what would I ask the people to do to it?
Right now I have a Prius but besides the amazing MPG, I dont like it. So, I am considering getting a different car IF I can get it modified to have better fuel efficiency.
Thanks!