We already know what they're capable of.. that's why most of us bought our cars. To answer your question, yes street racing is frowned upon here. If you were at the track thats a different story and that really is where you should keep that sort of activity. Its safer for everyone that way.
Not flaming you, but you do know that anything you put in text in any way shape or form can be construed as admission of guilt right? ... to be forever saved on a search server (likely many)... I'd imagine the police and legal systems in Malaysia are a bit more strict than they are here in the states. Just something to think about and be aware of.