I have a 2004 Ultra classic and have started to get a pinging sound. I run the 93 octaine and always have. You really don't hear the ping until you take off and the bike is under load. any help would be great.
Might be time to decarbonize your engine. Remove the air filter and fill a mister bottle with water and squirt a stream of water into the throttle body. Possibly use 5 or 6 oz. This will cause the carbon to losen up and blow out the exhaust. I do this at least once a season.
kemo