Cm870 demandated hot egts

[Upnorth83]

So I was replacing egr valve every couple months so I decided to demandate. Nope I’m having hot egts. 800 to 1000 empty and loaded in a pull it’s hard to keep under 1200 and really hard to keep under 1100. Everything just seems to be running hot. Oil temps are 220 while water temp is 180. Just replaced oil coolers. Checked air to air. Not sure if this is normal or ok. They told me it’s rated at 600.