Preheat over to 400 degrees. Line Crust with foil, fill with dried beans, and bake 10 minutes. Remove foil and beans pierce with fork the pie crust several places, Bake for another 5 minutes. Cool on rack, and reduce oven to 350.
Whisk eggs, half and half, maple syrup, and vanilla in medium bowl. Whisk pumpkin, sugar, flour, spices, and salt in another bowl; add egg to mixture and whisk until well blended. Pour filling into crust.
Bake pie until filling it puffed around edges and center moves only slightly when pan is shaken, about 1 hour and 5 minutes, Cool on rack, chill until cold at least 4 hours or better overnight.