Peterbilt 2015 cm2350 list of issues

[Trey7981]

Well crap, powerloss is back intermittent. You can hear it in the sound of the motor when the motor sounds smooth full power. When it’s loud it’s low power. Can also see it on current mpg. 3.3 or less low power on low grades full power 5.5 mpg. Still have no active or inactive codes on insite. Can my egr valve be messing up and not throwing a code? Idk