Forty years ago when you talked about tuning a car, there wasn’t much more involved than twisting the distributor or turning a screw on the carburetor. Now, computers are a big boon for us gearheads, and a revolutionary new product lets you tap into the potential of your ECU like never before: SCT’s new Touch Screen Xtreme. The best part? No wires required. How 21st century is that? Let’s take a look at the Touch Screen Xtreme in the powerTV Garage.