From what I understand, it is a torque-sensitive limited slip. These function as open diffs around turns and under normal operation, but under hard acceleration lock the axles. This being said, it will not do doughnuts or spin both around a corner like a locker unless the axles lock before the wheel is turned. Like leadfoot said, open diffs NEVER spin both tires at once, and often just roast one tire, not switch between the two. Please go on youtube, streetfire and myspace tv and search crossfire burnout if you think its an open diff. and like I said, I'll test it out once I get my car.