e-Diff is designed to prevent grandma/grandpa from tail spinning on an icy road by cutting the power from the driveline and by playing with the DSC and the ABS.
It is total garbage for the track! The end. Full stop!
If you have any serious aspirations for track driving, get a mechanical diff and then code out all of the other systems to stop interfering with the car. Those revolve around coding the DSC (DXC), ABS and the traction control.
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