Dump valve

Dump valves are fitted to the engines of turbo charged cars and sit between the turbo outlet and the throttle body. These are known for the "tissh" sound when you change gear.
Found already fitted in cars such as a subaru.

Dude i just bought i Subaru, i love the sound of the dump valve when i change gear. Listen it goes "Rummmm tissh!"

by KatieLovesIt! April 20, 2009

Dump valving

The act of fucking doggy style and parting her cheeks until she farts like a dump valve

I lost my boner cuz she wouldn't stop dump valving

by Cclou November 7, 2023