Back on topic: For drag racing (for which I assume you're tuning that Supra of yours) I think it's best to go with the stiffest possible setting which is 60/60/60 like someone mentioned, but for ciruit racing LSD tuning is an art that I've yet to properly master. It's a good idea to set it too stiff at first and then keep making it looser until it feels good. On most of my cars I end up with about 10-30 on acceleration.
As far as I understand, the first value changes how long it takes for the LSD to go from the deceleration value to the acceleration value. You want the transition to be smooth and come at a good time so you won't get a sudden change for understeer and/or oversteer at the touch of the throttle. Takes a lot of tinkering to get this right.
Acceleration value means how much are the right and left wheel locked to each other when you're on the gas. The more you'll have, the more stiff the rear becomes and the car seems to "bend" less into corners and you get more understeer. Also more acceleration value means, that if you lose the rear end you'll lose it more drastically, it all just jumps out and it's harder to get back.
Deceleration value decides how much the right and left wheel are locked to each other when you're off the gas. It's usually best to leave this quite low and atleast lower than the acceleration value. Going too stiff here will induce understeer, but going too low will make the rear end feel a bit floaty maybe, and if the contrast between the acceleration and deceleration values is too big, you might get a big jerk when you come off the gas and that's never good.
There are plenty of people on this forum who've mastered the black magic of LSD tuning so it's a good idea to look around for quides in the Tuning section of the forum.
