Thanks 2f2f, really appreciate your info on the brakes.
I just got my Vitz tuned and he cleaned all the sensors, throttle body, replaced the plugs/filter, did some ECU setting, fixed my Heater hose pipe and now its drives AMAZING.
By the way im thinking of getting the original brakes installed on front and taiwans at the back, limited budget:(.. wot do u guys say?
Also, what is PCV valve, and where and for how much can i get it ? i've heard it should be replaced every 15k, pls help