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Preheat oven to 350 degrees F (175 degrees C).
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Grease two 9x5 inch loaf pans.
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Sift together the flour, baking soda, baking powder, salt, and pumpkin pie spice; set aside.
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In a large bowl, beat together sugar, oil, eggs, and pumpkin.
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Stir in flour mixture alternately with water.
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Divide batter evenly between the prepared pans.
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Bake in the preheated oven for 60 to 70 minutes, or until a toothpick inserted into the center comes out clean.
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For best flavor, store wrapped in plastic wrap at room temperature for a full day before serving.