I have a boost gauge that is installed along with a afr gauge that I haven't installed yet just there for decor pretty much till I get the time to install it. But anyways on my boost gauge it says I'm holding 10 peaking 15psi but on my ap it only says I'm running 10 peaking 10.5. So which one should I go by my boost gauge is ran off my bpy line. Also there is a slight flutter when boost kicks on which sounds like the wastegate trying to open prematurely and needs to be tightened on the actuator. I know this is probably ignorance on my part but I would just like to know for peace of mind. Any help would be deeply appreciated.