My EGR cooler went out over 100,000 miles ago and was never replaced. I yanked the EGR hardware, made plates to cover the holes and moved on. The original DPF is still working great with about 290,000 miles on the truck. I have a constant CEL due to the deleted EGR system which I think a tuner will clear but I'm not about to spend that kind of money just to clear a CEL. If you dont mind the CEL being on then all you need are some blanking plates. The DPF doesn't care.