GY200 is whipping me.

[Lao Jia Hou]

I don't know if there is any way that a CDI can alter the timing of the spark but that is all that is left ... These black boxes are indeed a mystery

I would not think that the CDI would affect the intensity of the spark since it just triggers the coil. You might want to swap the coil and see if the spark increases but then again you might not since the bike is running fine now. Something about if it ain't broke don't fix it?

In my case (noted above), the Honda mechanic tried to explain to me (as my eyes were glazing over) that with certain "faulty black boxes" the timing was affected by various factors, including ambient temperature & humidity. Huh? WTF? But how can one argue over that mysterious electrical stuff that one cannot actually see. Anyways, I paid my service bill, got my bike back & it worked. I was happy.

Barnone's suggestion to swap out the coil makes the most sense re the weak spark, but his wise observation that "if it ain't broke" ... yeah, that is the one I would follow! (with a spare coil in my tool box, just in case)