What I call "Extra advance".

 

 

 

In this example the pickup is mechanically set at 30 BTDC.

Normal advance
Extra advance
Advance can be adjusted between 30 to 0

but if you want a maximum advance of 40.

there are 2 solutions:
- To move physically the pickup to 40
- To wait for quite a rotation and produce a spark at 40 BTDC
Precisely the microprocessor must wait during: 30 + 360 - 40 = 350


Exemple: