Can’t get mpg up

[Rawze]

(09-23-2023 )EliteT660 Wrote:  I don’t have insight set I’m working on that. But I have been getting random dpf/doc alarms and when I get under 5 mph I often get the hot exhaust light. So I’m assuming the system is regening to often

Very likely so, and how old are the DPF/DOC elements?. When was the last time you removed them and had them professionally baked out, de-ashed, and flow-tested?. They are due for this every 2 years or so .. BEFORE the check engine lights start coming on, or at first signs of it wanting a parked regen.