Originally Posted by hogmolly
Most pinging I have dealth with is due to spark advance in combination with the compression level and fuel octane. Air temperature also plays a role in flame front propogation.
PS. Merry Christmas, drinking coffee and waiting for the kids to wake :)
Yep, all of those can cause pinging. But if you only experience pinging when you open the throttle at 3k to pass without shifting down, it's the increased heat build up in the engine that pre-ignites the fuel and causes the pinging.
Merry Christmas to you and the family as well. Kids are gone from the nest and Christmas just never seems the same.