I don't rely on the knock meter for anything but a safety meter...if it goes over 150 I would start to worry.

 

if your looking at sensor reading on the check sensor part of the afc i believe that 50-70 knock reading is normal. i always stays the same for me even when i put a little bit of 104 with the mix. but, i get not knock readings from the display setting. so im thinking that maybe its normal?

 

I didn't bother using the knock sensor on the S-AFC II, I have heard that they always read incorrectly anyway. I tried to calibrate it, it never seemed to work right. I was reading pretty high.

 

i cannot, for some reason, change the rpm or knock setting in the "knock set". can anyone explain what i am missing?