I've got one of those clutch kits sitting in my bedroom
Mine doesn't feel as fresh as it did before the map, over time the torque may end it's life if it's driven hard. Mine has seen track time plus many other hard drives, lol.
I would only replace it if you start to notice it perishing otherwise leave it be till then IMO. Like Jay says, a lot is down to how you drive it and how long it will last. 1/4 mile traffic light grand prix's will kill it in no time with the torque his car will still be running.