Another big red headache

[Rawze]

Run it at 100% engine load for a good 30 seconds+ or so at 1500-1600 rpm and see what it peaks. Maybe take a screen shot of live data while it is still under those conditions as well.

The live data at 56% load also only shows 14~ish psi on the boost. A bit low if you ask me, yet the turbo is positioned roughly where it should be for that model truck at that % load.

just some thoughts at a glance.

Have you tried it with the exhaust removed off the back of the turbo to see if it improves? (possible exhaust restriction?)

if it was only a couple PSI high or low, I would say it simply needs adjustment,.. but if it is that far off,.. something is a-miss somewhere... Boost leak, exhaust restriction, leaking injector, etc.