I've got a facelift standard c63. I've mapped it with a eurocharged v5 tune and I'm now wondering if an LSD is worth fitting. I really like the way the car drives. Especially in manual/sport mode. It's really easy and so predictable. I can easily give it a safe flick off a roundabout and it makes you look like a much better driver than you actually are. My question is, if I fitted an LSD how would it affect this? Would it make the car in effect, more grippy? I'm not so sure that's a good thing with an amg merc? Also what effect does it have on the race start mode??