I am clueless as to why I am having this problem. I've been looking everywhere to find an answer the last few days and have been unable to diagnose the issue. My s2k is supercharged and I just got a boost gauge. I got a T fitting for the vacuum line going from the intake manifold to the fuel pressure regulator. The gauge reads the vacuum pressure but will not go past zero into the boost side. I checked at least 5 times for any leaks and there are none. Everything is sealed. Everything I have read says that is where to hook the line up to. Anybody know why this is happening? Thank you so much in advance.

 

That is a good spot. If it is reading the negative pressure there then it should read the positive pressure as well. Either you gauge is bad or your SC isn't making any boost.

 

I can feel the sc kick in when I get on it. When i hit the throttle you can hear the spooling.

 

Make sure the fitting isn't placed past a check valve. There may be something that is resisting the positive pressure and not allowing it to reach the sensor for your gauge.