have an '05 rk classic...bought it last fall...5,300mi. GORGEOUS bike....... had a stage III, bassani 2 into 1 road rage...screaming eagle intake.....first harley (hit a deer in '92 on the rice burner.....ended riding for a while)...
took the bike into a dealer to make sure everything was tuned as it should be. they told me i needed the PC3...........got it back after they ran the dyno, and it missed terribly on initial startup......evened out after a minute or 2 and ran great, but back-fires when i roll-off the throttle.....; took it back, and they "re-tuned" it so it didn't miss/backfire any more.....didn't trust the "re-tune", so took it to another dealer in town......; they re-did the map (first place did a canned map; second place supposedly set a custom map)
well, it's back to missing on startup and back-firing some, but really runs great on the road.....
so, i'm hoping everything's good........but, how would i know...?