new to supercharged engines!! k so i just got a 2006 grand prix GT and it is supercharged !! the HUD shows boost but not in PSI!! so i just got a boost guage and i was wondering how to install it on this engine?? its the 3.8l V6 S/C series 3 so does anyone know how to hook up an aftermarket boost guage??? and also does anyone know what PSI this engine runs stock???