Place the cake mix, vanilla instant pudding,eggs,water and oil in a large bowl. Using an electric mixer, beat for 2 minutes. Fold in the coconut and chopped pecans. Pour the batter into your prepared 13×9 inch pan. Bake 45 minutes or until golden brown on top and a tooth pick inserted in the center comes out clean. Remove from the oven, place on a cooling rack to cool completely before frosting the cake.