Originally Posted by folkstyle171
@3000 it is at 1 bar, by 3750-4000 it drops to .6-.7 bar and by 4200 is back to 1 bar steady till redline. Any Idea on why? I think bad tune or the boost controler needs to go. Oh well I got digging to do.
That would be the first turbo and then the second turbo kicking in
That little dead spot in between is referred to as the valley of death.