soup up

Verb

soup up (third-person singular simple present soups up, present participle souping up, simple past and past participle souped up)

1. (informal, transitive) To modify the engine of (a motor vehicle) to give a higher performance than the specifications.
   • Imagine souping up a Mini with a Cosworth engine: the car would fly.2009 October 19, Paul Rees, “Flying backs become walking wounded as blitz defence has its impact”, in The Guardian
2. (broadly, figuratively, transitive) To embellish with many additions.
   • They are dickering over a tax cut small enough, in a bill "souped" up with gadgets, to escape or override a veto.1948, Harley L. Lutz, "Taxes and Jobs," Institute of Business and Economic Problems: A Series of Lectures, page 25