Mix first 4 ingredients and set aside. In a mixing bowl, beat eggs and add sugar, 1/4 cup at a time. Add chocolate, then add oil. Add flour mixture and blend well. Fold in zucchini and pecans. Mix well and pour into bundt pan. Bake in preheated 350 degree F oven for 1 hour and 15 minutes. Cool 15 minutes before removing cake from pan. Sprinkle powdered sugar on cake and serve.