CAS wobble is a huge issue.
Whether it is a crank harmonic, cambelt harmonic or a problem that is amplified as poor timing which the creates uneven power output from each cylinder which then causes more harmonics I don't know.
What I can say is I have logged the relationship between the flywheel and the sync position provided by the CAS.
My timing is driven from the flywheel so is not affected by crank and cambelt harmonics, but cam timing is also out by the amount shown on the graph below.
The graph shows the CAS wobble on my engine under full power through the gears at TOTB V, the 0 to 100 scale on the left is 0 to 20° CAS wobble, so there is a + an - 5° error.
You not be given access to the workings of the ECU and will never really know well your unit will perform.
Gutted for you Andy that you have to pull your engine apart again so soon, here is hoping that you overcome all the difficulties this time.
