Could someone please reiterate what needs to be done with the vacuum plumbing? I've seen the circuit diagram, and it's very clear about the electrical modifications. What I'm not clear is whether anything *needs* to be changed with respect to the vacuum plumbing?
I saw some posts that said disconnect the transducer from the EGR valve, and other posts that said to disconnect the vacuum reservoir from the transducer. What is correct?
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