I have a 2005 with the hypertech on stage 3, silverline 4" turbo back exhaust and AFE stage 2 intake kit. My gauges are the commander control digital stand alone gauge system. My question to everyone is - What is your normal boost pressure when you are just criusing unloaded between 60 and 70 MPH. Mine runs 0-1 PSI, if I step on it it comes right up like normal. Is this normal for the Garrett VVT turbos on the duramax's? All info would be appreciated.