I have heard some detonation on my Kona while running mid grade 89 octane gas. It keeps going until I pull my foot out of it and if I re-apply and get boost again it is gone. I just barely heard it with the radio on one day . The radio covers 90% of the sound, so some of you may miss it. I have my foot into it and am on boost more then most, I caught it when the radio was down or off, I now try to listen for it. I have heard this now with 600 miles on the motor maybe 5 times. Anyone else hear it on their Kona 1.6T??