If it doesn't ping with higher octane gas one option would be to carry an octane booster while out on the road for those times you have to go with 87. I'm sure you have room for a couple bottles.
13 Vision Tour - PCV, Top Filter, Stage 1 Pipes, TW @ +4, Metz 888s
08 Vision Street Premium - VFC, Top Filter, Stage 1 Level 2 Pipes, E4s
Past Vic - 07 KP Tour - Stage 1, S&S Intake