AccessTUNER
Hey so I just got a 2012 GTR and it currently has a Cobb tune on it and what I’m confused about is there’s 3 maps with
Map 0: 525whp
Map 1: 550whp
Map 2 :575whp
when switching my maps I open the boost gauge and it will change depending on the map going To about -15psi,-10psi,-5psi from each...