underboost

Verb

 * 1) To create too little pressure in an engine's combustion chamber.

Noun

 * 1)  The process of underboosting.
 * 2)  An instance of underboost.
 * 1)  An instance of underboost.
 * 1)  An instance of underboost.
 * 1)  An instance of underboost.