Still at the shop - so far replaced an Injector and put in NGK 97506 one step colder plugs gapped at .022" (per the tuner) and all those 140xxx misfire/combustion codes are gone.
He can't replicate the low boost code. It only started after I replaced the boost solenoid, so there's a chance it was a faulty (new) solenoid which I've swapped out since. I'm hopeful but kind of expecting it to show up again somehow.
The last issue we're trying to sort out is my wgdc gets to 100% with the custom tune even though I only get to ~10psi at the top. That's low even for Pwg, but I'm in Denver so maybe it's just the altitude. Still weird that it's at 100%. Still need to test the wastegate actuator to make sure it's fully closing at 5 in/hg vacuum, and if it is then I think I need to shrug it off and send it...
Here are logs showing 100% wgdc on the 4th revision of my custom tune:
https://datazap.me/u/ahetts/v4-3-log...0&data=3-14-24
And here's a log from before I started custom, using mhd stage 1, where I'm also at ~10psi at the top but only 60% wgdc. Weird stuff.
https://datazap.me/u/ahetts/no-cylin...o=3&mark=48-56