knock sensor and ignition mapping.

[chencho16000]

Hi. Good afternoon!
About checker engine knock, it seems that everything works because fixes to prevent knocking.
However, how acceptable values knocking?
I ask because once corrected and reviewing log observe that sometimes appear negative degrees?
   It is normal?
  It produces failures?
   Can anyone help to map a turbo engine torque without knocking?


   Thank you.

[gunni]

Do you have a log ?

[chencho16000]

yes
upload with vemstune.