I've been searching far and wide about Limited Slip Differentials, but still haven't gotten a fairly decent response about this. I've been drifting my FC decently lately, and I have a few questions about it. First, what exactly is the LSD doing to help me drift? Second, how can I tell if it's going to crap out soon? And third, how can I tell if I need to replace the LSD? Any thoughts would be appreciated.

well you'll know you need to replace it if you are only leaving one tire mark on the pavement. even then if you have a clutch type lsd you might just be able to change the clutch discs. hope that helped some.