Removing the Cummins ISX device's emissions hardware commonly called an "ISX delete" is a increasingly popular modification for commercial trucks, but it’s very important to understand the implications. https://docs.google.com/forms/d/e/1FAIpQLSdam2QUFVuG7fnoJMm31iTK8Q2UbSzxFFxAWWqp2k9stCQp4g/viewform?usp=publish-editor