Removing this Cummins ISX system's emissions controls commonly called an "ISX delete" is the increasingly popular modification for commercial trucks, although it’s critical to understand any implications. https://zopedirectory.com/listings1345630/cummins-isx-delete-kit-the-ultimate-guide-to-cummins-isx-kit-options-components-and-maintenance-guidelines-for-cummins-isx-owners