Rawze.com: Rawze's ISX Technical Discussion and more

Hey all,

Looking up calibrations for a celect plus... found two that have the same ecm code, FR, DO, power and torque rating... only difference I have found is in CPL comments is that one is linehaul and the other says power rating L

What the hell is power rating L? Thanks in advance

low nox, its the updated current calibrations that cummins redid to make slightly better on emmisions.