Almost every modern Vehicle is designed with a Diff of some description, it is the ONLY mechanical link between the engine and the wheels and is necessary to drive both wheels at the same time. A vehicle equipped with a regular Diff often suffers from Sway, Pull, Swagger and Drift due to the performance characteristics of its Diff. A regular Diff takes torque from the output shaft of the engine, goes "meh" and lets the torque go wherever it wants to, it could go to the Left wheel, or the Right wheel, and sometimes it does a complete 180 and goes back into the engine to drive the Supercharger, leading to unpredictable speed boosts. For this reason cars with superchargers are never equipped with a regular Diff. Because the amount of torque going to each wheel changes, so does the speed of th