The RaceME Ultra is our most popular DPF Delete capable tuner for the 2013-2018 Dodge Ram Cummins Diesel 6.7 We have put together a few different DPF delete kits that work well with the 13-18 Ram 6.7 Cummins. The 2013-2018 Dodge Ram Cummins 6.7 diesel is equipped with several emission systems. These include: exhaust gas recirculation (EGR), diesel particulate filter (DPF), catalytic converter (CAT) and diesel oxidation catalyst (DOC). The intent of these systems is to reduce emissions. When your truck is relatively new with low mileage these systems function as intended. Unfortunately with increased mileage; fuel economy starts to get worse, DPF regeneration no longer works like it use to and your faced with poor drivability. Depending on how plugged your CAT / DPF is, your fuel mileage could be around 12-13 mpg. Often times worse. At this point the DPF needs to be cleaned out, replaced or deleted. Cleaning & replacement is temporary. In a few thousand miles you will have the same issues. The only viable option is doing a DPF delete. Installing a RaceME Ultra DPF delete kit on your 13-18 Cummins 6.7 is one of the best things you can do to increase fuel mileage and improve reliability.