Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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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.