The Powerjection+Plus and the Stage 4 EMS debut at the 2009 SEMA show. the Powerjection+Plus includes the Powerjection III, Fuel On Demand, and full timing control via a 2-wire distributor. The Stage 4 EMS is a stand alone version of the Powerjection+Plus with a separate computer and wire harness for use with existing EFI systems such as a multiport setup.