Beat together oil, sugar and egg.
Stir in salt, pumpkin pie spice, baking soda and flour.
Add the pumpkin until blended.
Fold in the chopped pecans.
Pour into a greased 10x15 jelly roll pan
Bake at 350 degrees for 20 to 25 minutes.
While the cake is baking mix together the icing.
Blend together all the ingredients and spread on warm cake.