I just recieved my vac/boost gauge and tried to intsall it this morning. I tapped into a rubber line going to the intake manifold (pic below). With everything hooked up I only got vac and no boost but i was only reving the engine. What is the probem, do I just need to take it out on the road and it will work or could their be a check vavle where I put my t-valve so no pressure can get in. could somebody help me out a little. If someone could give me a pic of a better place to input that would be awsome. Thanks.