Ignition maps 1, 2, 3?? Knocksum??

[abd]

Hi,

I am seing knocksums of 4-5 and want to lower the ignition advance a bit, how are the 3 ignition maps related to each other? Which one should have the highest values? When does the ECU change to use another ign map other then the one with most ign. advance? In my current setup ign map #1 has the highest ign. advance..


Knock, how high knocksum is normal? Should I aim to have 0 knocksum all over the rpm range or what is considered OK?

Thanks.