I have about 2400 miles on my car and have run nothing but 94 octane. I have never heard it ping, but I have felt significant changes in power from one minute to the next. I'm not sure if their is slight detonation and the ecu is pulling timing then a few minutes later goes back to normal. I've also noticed if you shut the car off for a second then turn it back on it feels normal again. Has anyone noticed this, especially people experiencing audible pinging?
Either way this is great news, i'm definitely going to get this reflash. I just can't tie up my car for 6 days so i'll have to wait. I'm not complaining.