So I installed my Greddy kit, got the car started everything sounds great. I go to install the bov and boost gauge and I hit problems... I used the small line off the manifold for the blow off valve and it works, but I also ran a splitter from it to my boost gauge, and I have nothing. It shows negative when not giving it any throttle but won't go into a positive pressure at all. So I'm wondering if it's the cheap digital gauge I bought or if I'm using the wrong line? I'm a little sketched out to even drive it if I can't see what kind of boost I'm building... I'll add pictures tomorrow of the small hose I used from the manifold if that doesn't make any sense

 

I used the line that runs to the PCV valve, but from what you are describing it sounds like you have a bad gauge (if your BOV is working with this source).

 

Thank you I'll try that