There has been some discussion as to the accuracy of the Morgan Carbtune. Well, I have to say that those accusations are founded. As you can see, I tee'd all four lines to a hand vacuum pump. And this is what I got. Should have been perfect. Doing it "on the bench", I could hear the rods dragging, which of course you can't hear with the engine running.
This Carbtune has only been used a few times. Now, I will see if cleaning it makes any difference. But I think a calibration check is in order before any synchronizing.