[buzzinhalfdozen]

Mark, I stated no obvious symptoms because most of the converter issues I've seen guys have other than an obvious ET change They are unaware of whats "different" during their run. With a datalogger it's pretty easy to see it, even a playback tach helps. A just complete failure is easier to diagnose than a damaged converter. You are correct in they should be seeing something different in stall speed or finish line RPM. Hope you all find your issue. Please post your findings. Joe