Was asked to have a look at this car of a friends, when going WOT the car will knock badly above about 5000rpm, been like that since he bought it, it has some light exhaust and intake mods but nothing major. After a couple of quick runs I was able to get the fueling close which also brought the timing into the correct cell and the knock was gone but the only thing I cant figure out is why I didn't log a single degree of knock retard when the car was so obviously knocking.
I been through everything I can think off several times and everything in the tune looks like it should be seeing, and pulling timing for knock, I must be overlooking something.
Can anyone see what I am missing to make the knock sensors work? or could it be a mechanical problem like faulty knock sensors?
The only thing that looks strange is the values in the "Knock Fast Attack Rate vs. RPM" are way higher than the should be but it appears to me as though HP tuners is displaying the decimal in the wrong spot as I have 19s where I should have 1.9s, 44 where it should be 4.4 but regardless this should just make the knock retard super aggressive.
In the log you can see a WOT pull at 1.32 where I could definately hear knock above 5000rpm but none was reported in the log.
Can't tell if the tune has been modded before as I can't find a matching stock file in HPT format.