Proform 850 dialing it in closer

If the RPM function is set up correctly it will tell you exactly where it stalls. On your last log it shows the rpm trace start @ 0 when i would imagine you are idling or on the transbrake at the lights.

On a related note check every connection on the car as I just found what was causing all my fuel pump pressure issues. It turned out to be a loose earth at the relay just touching so it would work normally most of the time but would always come apart during a run and turn the pump off and on. You might have a high resistive join some where causing your problems.