Preheat oven to 325°F (163°C) and grease a 10- to 12-cup Bundt pan.
In a large bowl, mix cake mix, vegetable oil, pineapple juice, and eggs. Beat for 2 minutes until smooth.
Pour batter into the prepared pan and bake for 30 minutes until a toothpick comes out clean.
Let the cake cool in the pan for 10 minutes.
In a saucepan, heat butter, pineapple juice, and powdered sugar over medium-low heat until smooth.
Poke holes in the cake and pour the glaze over it while still in the pan. Let sit for 15–20 minutes.
Invert onto a serving platter and drizzle with extra glaze before serving.