If it already has the fast acceleration performance, why would you want to tune it?Pfft.
Once you’ve got over their only trick of fast acceleration (whilst draining the battery at an alarming rate), what else is there? You can’t modify or tune them, no one knows what their secondhand value is going to be as battery life hasn’t been determined, it’s highly likely an alternative fuel will be along in five years that will make EVs look silly, they are wickedly expensive to buy making their running costs irrelevant as you won’t recover the differential between them and an ICE model …
People tune cars to go faster, but it already is?
You can however play with the softare to change perfromance characteristics.