Rewrite at 8x speed?

I just found the tool “MediaCodeSpeedEdit” to edit the Firmware of my Liteon LWS-811S.
It seems to be possible to change the Writespeed of +RWs to 8x or higher.
Does anyone know what happens if I change the setting?
Is it possible to write at 8xspeed, are there regular drives or media at all?

so long

i dun think.