Removing this Cummins ISX engine's emissions equipment commonly called an "ISX delete" is a kind of increasingly common modification for industrial trucks, however it’s very important to understand any https://docs.google.com/forms/d/e/1FAIpQLSf0phG0UqSdIzLQN_4rp9QYfJNKbjcoqFnkIIY-jOmCwm_ObQ/viewform?usp=publish-editor