Combine sugar, oleo, syrup and salt in microwave dish. Stir well. Microwave on high 2 minutes, uncovered. Stir and microwave for another 2 minutes. Stir in soda and mix well. Place popped corn in large paper bag which has been sprayed with Pam. Pour mixture over corn in bag. Close bag and microwave for 1 1/2 minutes. Shake bag well; microwave for 11/2 minutes. Shake. Microwave for 45 seconds. Shake well. Pour on cookie sheet to cool. Store in tight bag.