Ok; Here's the deal: '07 RoadKing Classic,12K miles. Screaming Eagle slip ons, A/C, Race tuned with SE Pro Supertuner, SE 254e cams,SE comp. Has started & run perfectly for the last 10 years; never a glitch. Today started bike cold & idling in the driveway while I helmeted up. After running about 30 seconds, it suddenly died, which might not have been too unusual; it was the WAY it died...stopped suddenly like the engine locked up; didn't sound like a normal stall or shutdown. No noise. I have had carb bikes do this, but never an EFI bike & never this bike. I was afraid to start it again, but it started right up & ran perfectly for the rest of the afternoon, including a couple more starts & warmups. In fact, it almost seemed to run TOO good, smooth & quiet. I'm thinking maybe a hiccup or glitch momentarily in the EFI or something,maybe a drop of moisture in the fuel and that's why the sudden stop. Any body got any clues? Once again, it was the WAY it stopped, like my '71 Sporty stopped idling when I seized the motor back in the day.