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45Ricochet's avatar
45Ricochet
Explorer
Jun 29, 2015

Pre DEF Cummins 8.3 problems?

Just wondering if the pre DEF ISC 8.3 MH Cummins had problems with plugged emissions like the 2008-2010 pickups did? What year did the ISC go to SCR with DEF? Did the MPG go up between the pre SCR ...