Preheat the oven to 350 F.
In a saucepan, stir the sugar and corn syrup in a saucepan over medium heat until the sugar melts (it's okay if it's liquidy). Remove from heat.
Add the butter and let it melt, slowly stirring with a rubber spatula to keep the mixture from getting foamy. Gently stir in the vanilla, bourbon, and salt.
Whisk the eggs in a medium bowl. Gradually add the sugar mixture, whisking until incorporated.
Place the pie crust in the pan and crimp the edges. Place on a baking sheet (I skipped that). Spread the pecan pieces out evenly on the shell and pour the filling on top.
Bake the pie until golden and firm, about 45 minutes. Cool completely on a rack, then carefully remove from the pan.