I have a 2004 6.0L with an MBRP 5" turbo back straight pipe exhaust. I recently purchased the SCT Livewire TS from Innovative. I love the programmer and all of its options, but I started watching the gauges and the boost gauge reads around 15psi at idle and can easily jump to 35 under mild-aggressive acceleration (note that I am running the IDP Extreme Street tune). I know the gauge is reading from the MAP sensor which also takes into consideration atmospheric pressure, so should I subtract 15 every time I look at this gauge to "zero out" the reading? It just made me nervous thinking I'm getting into the 35-40psi range! This is my first post but I have already learned a lot from jumping around the forum, thank you for any help I really appreciate it!