Quote:
Originally Posted by HRTROB
You have it backwards. You want to tee off the line at position B, after the check valve. I have my boost gauge teed in there and I get proper vaccuum and boost readings.
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I would call that "before the check valve", but I guess that is semantics, haha. I envision the vacuum going from the intake manifold to the brake booster making the Tee before the check valve. You can Tee off anywhere that sees boost for your boost gauge. That can be the brake booster line or the line you already have Teed off the brake booster line. This is one of the reasons I prefer a vacuum manifold so you don't end up with tons of Tees and more failure points. I also prefer getting the vacuum from the PCV hose and leaving the brake booster hose alone, but I ran a vented catch can so I didn't need the PCV hose off the intake manifold any longer.