Cummins and Stellantis have been busted for using defeat devices for emissions from 2013 to current on 2500 and 3500 series trucks. I have been saying this for a while, Diesel is going away all together in consumer trucks very soon. The mandated (by law) reflash will sap diesel owners of horsepower and torque they paid for to bring it into compliance.
https://www.reuters.com/business/au...out-204-bln-charge-fourth-quarter-2023-12-22/
https://www.reuters.com/business/au...out-204-bln-charge-fourth-quarter-2023-12-22/