I installed my boost gauge on my 96 cobra and can't get a reading, tapped into a vacuum source at the back of the manifold and nothing do I need to run a by-pass valve or what can't figure it out any help apprciated.
Yea it has vacuum, but that is not the issue everything is brand new. Does a vacuum turn to a positive boost reference once boost builds, or do you have to run a guage with vacuum and boost both, because mine is just boost didn't know if that would have anything to do with it.
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