it is as nib said, a guide
the higher the level, the higher the knocking or detonation
it wont be related to speed but load
more often that not, in most cases;
car is tuned
runs prefect on dyno
jack all knock
car is taken on street
user loads it up
see's knocking
what generall occurs is you load it up on the street and you touch some areas of the map that weren't
tuned or have a bit too much timing. the dnyo is a simluator so it does a pretty good job
but its pretty common to see a car knock a bit differently on the street
if it was me and its my work shop i would tune the cars
then tell the owner to take it for trash and come back with the top score knock figures
then re-adjust based on that, ive seen so many tunes get done, then knock on the street after it
its no ones fault if that make sense, its just load variations and how much you give it curry on the street
not a big problem - easily fixed and sorted