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Related to soup up: vegetable soup
soup something up
to increase the power of something. He souped his car up so it will do nearly 120 miles per hour. If only I could soup up this computer to run just a little faster.
Make something more powerful; especially, add speed to an engine. For example, He was riding around in that car he'd souped up, or They had to soup up the sound system for the outdoor concert. [Slang; c. 1930]
To modify something so as to increase its capacity to perform or satisfy, especially to add horsepower or greater speed potential to an engine or a vehicle: The mechanic souped the car up with racing tires and a bigger engine. I souped up my computer with a faster processor and a liquid cooling system.