[trikkonceptz]

So then this is a function of the ECU ...

Whereas it cuts power to the injector, thus no fuel.
It then has to cut power to the electric fuel pump or no?
Then since the engine is still turning, you still have steering etc.
The valves are still moving also, which means once you give it gas it has to be timed to the correct cycle in order to get combustion again.

All within mili seconds .... impressive

Now on cars that can do this how long can you remain in this state? I'm guessing it is determined by rpm?

I also assume like it was said earlier that the coasting effect is reduced more than coasting in neutral so is it practical and what is its ideal use ...