2014 cm2350 how to get engine brake back after vgt delete

[FUDGENWORTHIT]

I guess I’m not understanding. It was a factory 605/2050. I was always running 220 water/240 oil temp {part of post removed, bad information}. So I did it and now run 185 water and 220 oil. Fixed that issue. {name removed, bad delete company} is who did the hot tune at the time of turbo swap. If it doesn’t make that much that’s fine. Y’all are pretty harsh for a guy trying to understand what’s so bad. Non vgt turbos have been around for years. I guess I don’t understand. Is my tuning bad because the high boost? Just looking for your experience