yeap, 7th injector wont work on non us cars. What you should do is tune the car, it will be the same and even better since the 7th injector is a band aid fix and tuning is the correct way to fix it.
GZERO,
What do you mean exactly when you says Tunning your car. Because Toyota said here that there is no way to install the 7th injector kit.
Maybe you could help me.