Removing the Cummins ISX system's emissions hardware commonly called an "ISX delete" is a increasingly popular modification for heavy-duty trucks, however it’s very important to understand the https://docs.google.com/forms/d/e/1FAIpQLSf0phG0UqSdIzLQN_4rp9QYfJNKbjcoqFnkIIY-jOmCwm_ObQ/viewform?usp=publish-editor