Do not use high pressure you will cut into the filter and do not waste the money on reman buy new less headaches more miles before it need to be done again. More guys are buying a new filter and getting back to work trying to save a buck will cost you more i down time and labor. Also change def filter and injector same time depending on your A few days later, the CEL light comes on and now the DIC shows "Engine Power is Reduced" message. I dismiss that message and the "cleaning exhaust filter" message reappears. After driving for a few minutes, this message would go away.Butthe CEL light remained on.This went on for a few days until I got it to the dealer. To be very specific I am getting codes P2453, and P2002 (Particulate filter pressure sensor "A" circuit range/performance, and Particulate Filter Efficiency Below Threshold respectively). They keep popping up like every other day. The other day I got them after driving nonstop 60 MPH for over an hour, and it also told me to clean the exhaust Simply speaking, the DPS measures the difference in pressure before and after the DPF. A clean filter doesn’t provide much resistance to the exhaust close, and the DPS measures little to no pressure differential. As the DPF collects PM emissions, resistance to exhaust flow gradually increases, effecting a gradual increase in pressure The reason I ask about cleaning the system is because I Know the driving I have to do is detrimental to the emissions on the truck and I Know as a result that my filter is probably dirtier than most others. This is a service kit that makes the DPF removable. I have not called the company. Just throwing this out there. The purpose of a DPF is to reduce emissions from diesel cars, collecting soot produced by diesel engines. This soot is collected over time and then when your vehicle reaches a certain mileage checkpoint (often around every 300 miles), the DPF will ‘regenerate’. DPF regeneration is when the vehicle heats the particulate filter to such a high Purchase a DPF cleaning additive to help clear the ash and soot. This bottle of fluid is designed to break down the ash and soot that's clogging the filter. Visit your local motor supply store or look online to purchase a cleaning additive. Add a DPF cleaner. These products lower the combustion temperature of soot so that it burns off more easily during regeneration. A pressure gun and compressed air can be used to remove loose ash in the filter, but not the stuck soot particles. Pressure-wash the DPF filter with heated water, spraying in the opposite direction of the exhaust flow. aF8kw.