Infiniti bringing direction injection to M
Quick search online and this is the first mention I could find of Nissan/Infiniti of using direction injection. The engine will be the 3.7L V6, but it might not carry over to the Z or G until the next generation. They be using the M car for initial testing and then if proven slowly bring it into the playing field. I could see though DI being brought out in an "updated" Z with the 3.7L in 2012 or so. As they went from the DE to the HR engine I could see the DI system being the major change in the engines for the Z this go around.