What is the G-Max flushing system on a Toto toilet?

The G-Max flushing system was desgined by Toto as a high performance flushing system that uses a 3" flush valve, a 2-1/8" glazed trap way, and syphon jet action.  This flushing system offers a 1.6 GPF gravity fed flushing system.
  It delivers a quiet yet extra powerful flush!