Removing the Cummins ISX engine's emissions hardware commonly called an "ISX delete" is a kind of increasingly common modification for heavy-duty trucks, but it’s critical to understand all implications. https://wow-directory.com/listings1314387/cummins-isx-delete-kit-a-detailed-explanation-to-emissions-compliant-solutions-available-options-and-industry-standards-for-heavy-duty-truck-operators