Removing the Cummins ISX engine's emissions controls commonly called an "ISX delete" is a increasingly popular modification for heavy-duty trucks, but it’s critical to understand the implications. This https://docs.google.com/forms/d/e/1FAIpQLSe7mVDYbW0hhxVkeEbHREjuxpEBueegcIAbYotOPcUf8lVeFw/viewform?usp=publish-editor