Hard to start and rough running. If you can keep it going for 5 to 10 miles it finally blows out enough carbon to run well. I've been reading in here about an idle knob I need to find and try but I have to wonder if it's the Cobra after market pipes as well. No or little back pressure and I really want a stock set of pipes. Sounds nice but louder than my preference. I thought the 2010 models had EFI and not carbs. Any addition advice is welcome. And yep, showroom above, just bought Saturday, the 21st.