Originally Posted by Brian Carlton

I agree.
We looked at six vehicles at one of the GTG's with the pulse timing unit and they varied by nearly 8 degrees from the earliest to the latest. Nobody reported any starting problems or running issues.
I believe the engine will start and run perfectly fine even when its 10 degrees retarded.
Naturally, the fuel economy and the power won't be to spec and the engine will definitely benefit from the correct timing.
One of our members set IP timing on the opposite stroke (360 degrees late). The engine started immediately but developed no power. It smoked the entire neighborhood with massive clouds of white smoke. Starting them is not a problem.