Stupid ADR's make turbo timers illegal on passenger motor vehicles built after Noah retired from the Jerusalum Bears, make sure you tell your insurer you have one.
... and, yes, I have one on my truck so not interested in a debate just saying is all.
From one of the state Transport Sites as an FYI
Turbo timers are not to be fitted to vehicles
manufactured on or after 1 January 1972. Australian
Design Rule 25 requires that the normal function of
the engine only occurs when the ignition is in the
‘on’ position.