Yamahas H.P.D.I. (High Pressure Direct Injection) & Evinrudes E-Tec both utilize the injector in the combustion chamber of the cylinder head. Lubrication is via separate pressure feed oil lines to vital areas. According to an engineer I spoke with, the advantage of this on a 2 stroke is the intake tract can be optimized for dry flow as opposed to a fuel laden wet flow design.The problem is physical size of the injector pumps, they are big & bulky.  If technology were to shrink these, is there any future with this in the powersports industry?