"soup up" is a correct and usable expression in written English.
It means to improve, enhance, or make something more powerful. For example, "My dad souped up his car to get more speed from the engine."
Probably the biggest reason for speed demons to soup up is to attract the women in bikinis.
Soup up those genes for I.Q.? Altering the genes that shape human behavior is not to be undertaken lightly.
If the confusion and the collapse here aren't quite sublime, Ives still manages to soup up some sidesplitting disembodied images — he has certainly read his Joe Orton.
The manipulation of the in-game currency has been causing problems in recent months, with players stealing money worth millions in the real world to soup up their vehicles and weapons.
He revered most of Shakespeare but, in tutorials, dismissed much of Othello and Antony and Cleopatra as an attempt to soup up emotion about the doings of great babies.
It is with some relief, then, that one turns to Staind — not because of the music (Staind is a metal band, and can think of no higher calling than to soup up old Black Sabbath riffs) but because at least you know where the group stands.
It soups up growth, and increases capacity.
As expected, Apple souped up its iPads with faster processors and zippier Internet connections.
It's being souped up for Brooks Brothers, which is returning to this stretch after a century.
It bought several rival search technologies, including AltaVista and Inktomi, which its engineers souped up.
They're known for souping up old soul and girl-group numbers with high-octane intensity.
