As soon as you tip out, RPMs will drop to around 1100 RPM, hang for a split second, then it dies. It's pretty consistent, and it's always at that point. Air and fuel are dialed in. I was able to manually manipulate it down to hot idle with the throttle and it will happily live there, STFT switching within +/-1%. But if you give it some throttle and let out, it comes down, hangs, dies. It's a big pain with a manual when it wants to die coming to every stop. I've looked through the logs and there doesn't seem to be anything that precipitates such a sudden drop. It tries to recover with IAC duty cycle and fuel, but usually fails. As far as settings I'm relatively close to the settings EFI dyno has on his site http://www.efidynotuning.com/dashpot.htm I assume it's dashpot related since I can manually manipulate it to live at low idle and it's happy there. Best I can figure is to decrease the decay rate at lower IAC flow even further, and/or add more to the dashpot preposition to that region. Maybe adjust the Max Clip RPM if it looks like it's bumping against that limit in that region? EDIT: I looked into idle air integrator. It was showing a pretty high value so I added to it. Loaded it up and tried again. Surged a little but still showed a positive integrator. When blipping the throttle it would come down slow, hit 1000RPM, bounce up to 1200 RPM, then come down and die. Added even more. Smooth idle, but still died in the same fashion after blipping the throttle. Integrator was near zero. I'm totally at a loss on this one.