Removing the Cummins ISX system's emissions controls commonly called an "ISX delete" is a kind of increasingly common modification for heavy-duty trucks, but it’s essential to understand the implications. https://bigboxdirectory.com/listings1355195/cummins-isx-engine-guide-the-ultimate-guide-to-engine-performance-important-considerations-and-legal-considerations-for-cummins-isx-owners