yes this GSI has the stock MPEM, part number 278000928. I'm buying a spare from Tonka in a week or two, they are getting hard to find, but just wanted to trouble shoot this one to see if I have a true MPEM problem. DESS key gives two beeps, ski starts and runs for a second or tow, then dies........all connections in rear black box are clean and tight. When I wire in a different MPEM in a gray box from another 717 ski, she starts right up and runs fine.......