[buzzinhalfdozen]

Ed, Are you seeing any abrupt changes in your injector Pulse width or timing? If you can see it on the Datalogger lookat the Pulse width closely it should not change, if it does we;d need to see if it's due to some incorrect input. Wish I were more familiar with the FAST system, however diagnosis should follow the same approach. Please let me know if you see anything irregular as far as the PW or timing. Joe Forgot to ask what inputs are you using for Crk and Cam? Possible Crk sensor issue, as I believe Cam is only used at start up