Precision Turbo and Engine Precision Turbo & Engine PW46 Wastegate - Manual (Page 3)

PART NUMBER: PBO085-2000
NAME: PW46
DESCRIPTION: 46MM EXTERNAL WASTEGATE
Operational overview
Your PW46 wastegate, controls turbocharger boost by bypassing turbine inlet exhaust gas via a spring
loaded valve diaphragm assembly. Spring rate, in conjunction with boost pressure signal, and back
pressure, control the opening point of the wastegate valve. Once the spring rate has been over come, the
valve will open. This causes exhaust flow to be diverted away from the turbine side of the turbocharger,
effectively slowing and/or stabilizing the turbine wheels’ speed. This stabilization results in a smooth
and steady boost pressure level, created by the compressor wheel of the turbocharger. Open pressure of
the valve can be controlled via spring rate and or a boost controller, such as a manual boost controller or
an electronic boost controller.
See diagram below.
3