I'm still not up to speed on the fuel injected engines. Fuel pressure is supposed to be 30-40. With carburators fuel issue problems were not jerking or missing just plain no gas, no power, like the engine quit and slowly you went to the side of the road. It seems fuel injection can cause bucking and jerking issues, due to the electrically actuated injectors. Better bow out and let the knowlegable take over.
Good old Bill