Another possibility is the throttle has carbon build up on the butterfly,this is a drive by wire system and has no throttle cable.
Can take the air horn off and wipe the throttle plate and bore off with some carb cleaner on a rag or qtip of some sort,dont need to go overboard with it just a good wipe down
Yet another possibility is if it has tar buildup(in the Regulator) that some got to the injector and is causing issues with the injector sticking a little bit