External 38mm Wastegate
Stainless steel is used for valve and valve housing with a high temperature actuator diaphragm. Actuator spring gives consistent pressure at high temperatures, resists "Relaxing" at high temperatures.
CNC machined 10mm thick weld flanges. Colour anodized aluminium actuator housing.
External wastegate is commonly used for regulating boost levels more precisely than internal wastegate in high power applications. Wastegate vents excess boost into the atmosphere creating that great external wastegate sound all the drift and drag cars have.
It comes with a 5.2 psi spring, already Installed.