An EcoDiesel EGR delete kit is generally marketed as an aftermarket package for the 3.0L EcoDiesel that removes, blocks, or disables the factory exhaust gas recirculation (EGR) system. Some kits are also promoted alongside ECU tuning and other emissions-system modifications. For a road-going vehicle, however, removing or disabling the EGR system can violate emissions regulations. The U.S. EPA...