Traded my 05 FLHRC in on a new 11 FLHX 103, really didn’t like the sound of the stock exhaust so bought V&H true duals, Arlen Ness stage 1 big sucker, and Python 3 1/2” slip-ons. Dealership said I’d have to get the super tuner so I did. Dealer installed everything and dyno’d it. When I’m at low speed (2nd gear under 25mph) and shift up to 3rd BANG, she back fires. Also on occasion it will POP a little from 3rd to 4th gear (3000 to 3200 rpm). Likewise occasionally I’ll get some de-cel popping. I’m very use to carbs but know NOTHING about fuel injection to try and start adjusting this. Where should I go, back to the dealer??? Any advice would be greatly appreciated.