W

Wastegate Control:

WASTEGATE CONTROL - A device that senses vacuum air pressure from the compressor side of the turbocharger, or is electronically controlled to open the wastegate in case of an overboost from a turbocharger.
WIDE-OPEN THROTTLE VALVE (WOTV) - In some EGR applications it is desirable to cut of EGR flow at wide-open throttle where a richer fuel mixture is needed for performance. Valve is vacuum actuated when "full throttle" signal is received from the carburetor.