Jfaulkner I will give your favorite charity $100 if you drive a 12.7 with a factory tune and a 171702. You will hate life. I will make it $150 if it's a 10 speed.
$250 if it's a Columbia and you take a selfie.
It's the combo of smoke limiting with the 171702. A hot day uphill with a heavy load and you simply won't be able to shift because the turbo won't spool at all.
A few more issues fixed:
- Bad ground to cab was possibly causing electrolysis (0.35v between coolant and block)
- rad was starting to clog, so I flushed it again.
- #6 injector failed in spectacular fashion. I put the truck pulls to shame with so much smoke.
- First detroit reman injector failed, I put it in 6
- Second detroit reman injector failed, I put it in 5 and known good from 5 to 6
It seemed to run cooler after that, but then my headgasket blew. I'm annoyed. Yes the dumb VGT is off.