I guess I really have no desire to see how much vacum I'm making. And if I were to have a vacum leak it would barely Bo noticeable however upon boost it'd leak like a bitch. So I really don't see the reference there. I'm only trying to keep a healthy engine based upon boost pressure not vacum. The boost controller controlling the waste gates will only see positive pressure so why should the gauge controlling the solenoid need to ever see negative pressure. I'd rather see a gauge at zero instead of jumping all over in the negatives. If I don't see a number above approximately 3k then I know I have a line leak issue. Just my .02
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