At the moment, I don't believe I'm educated enough to say. :) I can say, that the 5 timing sure seems to have more power then the 0, and had higher amp spikes , so it would seem that efficiency would be hard to determine, due to different performance.

But I'm doing another run, and it's more confusing. Geared down to 17/54, and pulled 119 amps. WHY!! :)