I'm trying to track down a cold start issue on a 2014 6.7 and noticed that the barometric pressure reads 4.18 psi on the ultra where in my mind it should read 14 psi at 1300 ft can any one clarify.

The issue is after start up 30-60 sec. instead of going into a higher idle it sounds as though the turbo kicks on, truck wont move whining out the exhaust and black smoke if you give it any fuel.

I let it warm up to 160 deg. and it's good to go.

Also turbo and VGT's are zeroed out during that period and if I plug it in at night it starts just fine in the morning.

Thanks