I'm not going to judge you or make a comment about how this shouldn't be done on public roads, but rather ask a couple of questions:
Any modifications? Surprising to see a modern vehicle actually make it through the whole speedometer range... The US model's dash goes up to 140, but I would have expected it governed at 115 mph (185 kph) or so. Says you're in Malaysia, and it's RHD, so is that an AUS spec CX-9?
EDIT:
Based on your other post, I guess my question is somewhat answered
http://www.mazdas247.com/forum/showthread.php?123847060-Mazda-CX-9-Stage-1-ECU-remapped-Top-Speed... I'm curious what some of the details are for the remap, maybe post there?