Today we're taking a look at the Edge Diesel Evolution CTS2 Performance Tuner. Now this performance tuner lets you reprogram your vehicle's OBD2 Engine Control Module for improved horsepower, torque and fuel economy. It simply connects in just a few minutes to the OBD2 port in your vehicle manufactured in 1996 or later. It offers four preset power levels. So you have economy, towing, performance… see more >