Combine yellow cake mix and vanilla pudding mix. Add water and Wesson oil. Mix together, but don't beat. Add separately 4 eggs and mix well.
Add vanilla and butter extract. Beat for 6 to 8 minutes. Grease Bundt pan well and sprinkle 1/4 cup chopped pecans on bottom and sides of pan.
Combine sugar and cinnamon to make "filler" to go between layers.
In greased pan, add "layers" of cake batter and filler alternately several times, ending with cake batter. Bake 350 degrees for 45 to 50 minutes. Let set in pan exactly 8 minutes. Turn onto cake plate and glaze while hot.
For glaze: Beat ingredients together and apply to cake with pastry brush.