Bad mpg and power 4.7mpg

[tree98]

(01-06-2023 )Trey7981 Wrote:  and ultra sonic cleaning of doc, dpf, and scr.

This is not a good idea at all. Any type of liquid cleaning of these components washes out the precious metals ruining the DPF and causing regen problems.

What does your aftertreatment history look like? What are your EGT's doing? Has the turbo actuator been off recently? If it was did it get calibrated with insite before it was re installed?

Have you done a turbo inspection to verify that the VG ring is moving its full travel? Is the commanded and actual movement of the VG close to the same while monitoring with insite?

Is the engine demandated? If it is you need to have Rawze look at the program because it's likely very bad and could be the cause of your whole problem.You didn't say what engine it is but if it's a 2250/2350 will it pass a rail leakdown test?