Turbosmart's newer version of their Boost Tee Manuel Boost Controller is now 33% smaller than before with a more ergonomic design. The Boost Tee is a pneumatic bleed valve that allows an increase in boost on your turbocharger where boost-based actuators are used and are suitable for internal and external wastegate systems. By manipulating the reference signal to an internal wastegate actuator or external wastegate, an increase in boost over and above the base spring pressure can be achieved. It is common to reach 100-200% increases in boost over the base pressure. Using our proven detent system, the controller can increase the boost in defined stepd, and the locking mechanism allows the boost level to be set and secure from tampering. Made from high-grade brass and billet aluminum, it is elegant and robust solution for simple boost control with maximum response.