[tomm.brz]

the pattern is so that, now that you had vvt enabled 1 time after the reflash, the next crannk/starting up will also be problematic.. and can be slower than first time
But
at Least the second time doesn t require speed = 0km/h, you can drive non stop until it enables again

From the 3rd starting of engine, after 2 successfull vvt enabled, will always turn on immediately after crank


So remember, flash always with cold coolant for better success, and:
vvt will enable first time only at 0km/h, and oil must be at least 32-35 Celsius, and idle under 1000
vvt will enable second time slower than first time, but also while driving at any speed)
vvt will enable always immediately from the third time


and use a lot of engine brake and high speed with cruise control and then try to trigger it engine braking from high speed and keep the braking until car is almost shutting down


that s my pattern every single time after a reflash
it took we many weeks to figure this whole out,
This problem is affecting mostly people with rebuilt engine, somehow the ecu doesn t like to see change.. so this is a very time consuming and annoying problem but I don t have a better solution to it
Sometimes it seems impossible to activate it, specially the second starting, and I just give up, reset DTC and try again the day after when cold again
Resetting dtc will bring you back like if you have just flashed it