gfb mac solenoid bad?

DreadedN54

New Member
Mar 1, 2022
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was wondering if anyone can help me out single turbo
n54 GFB three controller mac solenoid used to buzz
when I turn the ignition on I thought it went out so l
bought a new one and it's doing the same thing not
buzzing and car is only getting 11 pounds of boost but
when I put a manual boost controller on car overboost
and I'm on my third Mac solenoid tested the voltage I'm
getting 12 V on one side and the other side not getting
anything much when I hook up a separate power supply
to the mac solenoid a.k.a. straight to the battery it opens
up with the ground also check the wires from the GFB
controller everything seems OK is there a fuse or
something I’m missing?
 

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