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