Greetings, I have a 2003 Fatboy (Fuel Injected) 100% stock with 4,200 miles, that has developed an occasional hesitation and backfire through the intake (not an exhaust pop) when you crack the throtle from an idol or rounding a corner. I have had it checked for intake leaks, exhaust leaks and all checks out fine. I have tried different fuels, changed plugs and air cleaner and I have run out of ideas. Can anyone offer any suggestions? Thank you,