Preheat the oven to 350 degrees. Grease and flour a large bundt pan. Baking times differ depending on the type or thickness of your pan.
Peel apples and slice into small pieces. You will need 4 cups. (For us, we used 2 granny smith and 2 gala). Set aside or later.
In a bowl separate from your mixing bowl, add the all purpose flour, ground cinnamon, salt and baking soda. Whisk 30 seconds to blend dry ingredients. Set aside.
To the bowl of you mixer add the 1 ½ cups vegetable oil, vanilla extract, white and brown sugar. Mix to blend. Add the eggs one at a time, mixing after each addition until the yellow of the yolk has blended.
Using a spoon, stir the flour mixture into the egg mixture just until combined. The batter will be quite thick.
Fold in the finely chopped apples and pecans. Spoon the batter into the prepared pan.
Bake for 45 minutes, check on the cake using a long wooden skewer or toothpick inserted into the cake. It is done when the tester comes out clean or with just a few crumbs attached.
Cool the cake in the pan 10 minutes before turnout out. If desired, spoon or pipe caramel sauce on the top of the cake.