I just had my Quaife LSD installed today. Wow. Just wow.
The weather here is around 0 C (32F) and very wet today. I only drove about 15 miles home after the install, and so far only made a few hard pulls in 1st and 2nd gear (I have a 6MT gearbox), but I reckon with these winter tires, I have about as much grip on a soaking wet road now, as I did on a bone dry road without the LSD
No additional noise or other issues, just much, much better grip. The comments I have seen about the car changing behavior with the LSD is absoulutely true. It takes a LOT more to make it go sideways when cornering, and it's much easier to keep on a straigth line when accelerating hard in the wet.
Can't wait for warmer weather and summer tires and then the track
