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What are these please? Vq25 vacuum


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Hi guys sorry but im new to the vq25 engine and the m35 stageas i had a series 1 stagea 10 years ago so my knowledge us very rusty..

Can anyone please tell me whst these are and what they do?

Also as theres no stock boost gauge where is the best place to fit a boost gauge???

Any photo if possible would help dramatically

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They're solenoid valves. One is damaged. They are probably for the charcoal canister purge, triggered by the ECU (because they look similar to that used for that purpose on RB25 Neos).

Connect boost gauge to a small bore vac line coming from the plenum.

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