I might say it is better for auto-x where you're turning while accelerating a lot of the time, giving one wheel the opportunity to spin without an LSD.
In drag racing it will help off the line and will help both tires bite when shifting.
So really an lsd makes a big difference in either type of racing.

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My 1992 SOHC Turbo Hatch
My Youtube Channel: 6th Gear Garage

My 1992 SOHC Turbo Hatch
My Youtube Channel: 6th Gear Garage