What is LSD? Man, that's one of the biggest contributors to the ITR's handling and a high selling point. Kids these days h:

LSD stands for limited-slip differential and it is a traction control device. Specifically, the ITR has a (mechanical) helical limited-slip that works by sensing a tire on the front axle lose grip and then transfering power to the wheel that has grip. In a regular, open differential on most cars, all power is diverted to the wheel that loses traction. Hence, those gay one-wheel burnouts you see some people do. It greatly enhances handling around turns and reduces wheel hop when you launch.