Monthly Archives: December 2025


Boost Control, Wastegate Preload and TCV Selection

Motronic 4.4, along with most engine management systems, use a combination of mechanical and electronic systems to control boost pressure. This article explains: 1. The Three Pieces That Control Boost Boost control is dependent on these three components: You can think of boost control as a combination: 2. Wastegate Actuator: […]