Have you had this with your EOT?

[EvansF250]

I was watching my eot and saw that it would sometimes drop by 8 degrees when I brake then come back up to preious temp when I started to accelerate. Has not gone above 196 though. It just drops then comes back up. Also wondered if anyone has noticed lower eot after putting exhaust on, so far mine has stayed noticeably cooler.

[colo_dually]

Oil temps dropping on deceleration? I haven't seen anything like that, could be a sensor going bad.

Also, there is no correlation between Oil temps and an exhaust system, all heat transferred to the oil has done so by the time exhaust gases leave the turbocharger.