Egr dpf delete dodge 6.7

Another thing I forgot to mention is that particulate matter(the stuff that the DPF traps) is significantly decreased with hotter cylinder temps. However, hotter cylinder temps create a lot of NOx so the EGR inject cooled exhaust gases into the cylinder to lower the temps which creates more soot. So without the EGR constantly cooling cylinder temps, less particulate matter is created at the expense of higher NOx which is not good if you live in a population dense area with high temperatures. It is not bad if you live in a low or mid populated area. Only a handful of areas in the US are under high NOx reduction requirements.