In a medium bowl, whisk together the flour, baking soda, cinnamon, pumpkin pie spice and salt.
In a large bowl, beat sugar and vegetable oil until combined. Add eggs, one at a time, beating well after each addition. Add vanilla as you add the last egg.
Alternate adding flour mixture and scoops of pumpkin to the egg mixture, beating well on medium-low after each addition. Stir in chocolate chips.
Pour batter into prepared bundt pan.
Bake for 60 - 65 minutes, or until a toothpick inserted in the center comes out clean. Cool for 10 minutes before cooling on a wire rack. Let cool completely and then dust with powdered sugar before serving.