blowing white smoke at high RPM

[TODA AU]

i was driving infront of my friend the other day, and was really pushing the car to abt 6000rpm - 7000rpm and he said i had alot of white smoke..anyone have a clue what might be wrong?

Is the engine using oil?
How many KM's ?
Std ECU or otherwise?
Std Fuel pressure reg & pump or otherwise?
Is the PCV in good working order or is some other system fitted?