Quote:
Originally Posted by Loki Motorsports
This should work well, but as a rule of thumb, you always want to meter boost as close to the intake plenum/manifold as possible to get the most accurate and real-time readings.... Considering that pressure at the plenum is where it matters most. This will also help rule out any potential boost leaks, because you'll be reading what the pressure at the plenum is (right before it enters the engine) vs. taking it from some random vacuum line that could have cracks/leaks or something of that nature. BUT, boost leak check your system before hopping on a dyno to make big numbers!
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the bypass valve is connected to the plenum. the random vacuum line is part of the install to operate the bypass valve. i've seen some guys tap into the back of the manifold, I just didn't want to drill into the manifold. i've also seen the awron velocity stack with a tap for a line, or some people modify the stock velocity stacks but I didin't want to go that route either. i stuck to the ESS install instructions.