Removing this Cummins ISX system's emissions equipment commonly called an "ISX delete" is a kind of increasingly popular modification for heavy-duty trucks, but it’s very important to understand the https://docs.google.com/presentation/d/1fDpHlodLUmp2xyKo-F3kK2RGNUXP6vtZsykKxAq3ecM/edit?usp=sharing