I just installed an Agency Supercharger. I took it for a ride after installing it and immediately knew it wasn't any faster. Maybe slower even. I bought a mechanical boost/vacuum gauge. I T'd it onto the vacuum line that comes off of the bypass valve which is mounted on the charge tube that connects to the intake manifold. When I start it and run it in idle it doesn't register any vacuum. When I give it a rev still nothing, no boost or vacuum readings. Is it a faulty gauge or do I have a major vacuum leak somewhere? In idle the rpms sit around 900 and jump about 300 every second or so. I've visually inspected all of the new vacuum line connections and don't see anything wrong. I don't have a vacuum line smoker but that might be my next step.