What modifications to the car are necessary on the car to get the best results?
For the best results, some sort of megasquirter or ECU communicator is ideal. But simple tweaks to the MAP and O2 sensors will yield better results, and with the Land Rover, we didn’t touch anything and went from 12.1 MPG to 17.5 MPG. Each car’s computer is different and more research is being done now to answer these questions and optimize engine performance. More information will be forth coming.