I have a 2009 WRX and i am planning on buying a prosport halo boost gauge. I have been reading all about the installation process but frankly i cant find any decent videos or pictures with the explanations. My main questions are, does the vacuum line T into the line before the bypass valve? With the supplied harness will i be able to wire the gauge straight to my stock gauges? And lastly, when zeroing out the gauge, should the gauge read zero when at idle?