Yeah the diff. is an odd little thing. Before I broke mine I had been to the track and done a handful of stupid little burnouts. When it actually broke, I wasn't doing anything out of the ordinary. The real odd part was I broke it in East Lansing and still drove back to Troy, about an hour and a half away. That was on a Sunday. I drove it Monday to/from work, then when I got home Monday I knew something was wrong for sure. I drove it to the dealership Tuesday morning and barely made it there. Had to take side streets because I was affraid to stop...I didn't think I'd get it going again. The mechanic there took it for a test drive, and it broke down not even 2 miles into it! The torsen is my friend though.
