Proform 850 dialing it in closer

"Isolating battery), ran fuel pump,water pump, tps and power for the the LM2
Same problem.
Put every thing back as it was on the car except LM-2
same problem
disconnected tach wire from LM-2 seem to improve, but
same problem.
Removed all the wire from the coil to LM-2 and the the LM-2 Tach ground.
Test drove around the park...
fixed
test drive down the road
fixed
Full throttle stomp thu all 3 gears
You see the resorts in the graph above
Drove back home and it is still working................


Now to put the power and ground from the eng/car battery back to the LM-2 and see what happens.............