Center section of manifold cracking..

[Rawze]

EGT's should run about 1050F (post turbo) under full sustained operating loads.

Oil temps should be running about 235~ish max.. maybe 240 only if you torture it up a long incline. your temps describe that maybe the injection timing is a bit on the high side.

It should be about 32-33~ish boost max, so your boost sounds like it is in range.

Maybe Slipped cam, intake sensors reading badly.. leaky injectors, maybe altitude sensor reading high,. or a temp sensor .. or it could be set a bit high the programming too.