The EPA's government stupidity run amuck is costing you and me MPG and money. Cummins was ready to go with DEF and not being able to use it plus wanting to meet emissions early cost a big chunk of their RAM Cummins reputation. I understand the people responsible for this early emissions stupidity/cost to you and I/warranty nightmare from Ram/Cummins are no longer employed there. Good riddance! Sadly the new emissions limits affected all diesels and some people are dead as the ambulance stalled out due to emissions... No one from the EPA was fired for the reliability nightmare they gave diesels. Same for the toxic river spill that they then covered up with by going after VW for something you can't see unlike the orange river...
I agree with much of what you said about how DEF works in relation to the EGR and DPF. However, this I'm not so sure on. Where did you read that it was the EPA which originally forbid DEF/SCR to be used in the diesel emissions systems? I had always understood that it was a conscious choice on the OEM's part to avoid using DEF for the sake of simplicity (in hindsight, that proved to be a critical error for all of the North American diesel makers). The OEM's realized their error and started addded SCR's to their engines starting around 2011.
So no, you don't have to delete your emissions equipment in other countries. Now if you don't want to suffer problems like the Americans that have higher emissions than European countries then this is the reason to delete.
^lol. You've got your wires crossed there. America has far
less pollution problems (to include less particulate matter and NOx) due to its strict EPA regulations. Europe's pollution regulations, especially in regards to diesels, are far less stringent and their air quality has suffered as a result. It's gotten to the point where many European cities will periodically ban diesel vehicles during periods of bad smog. Many city mayors have declared their intentions to ban diesels entirely within the 10-15 years. I don't know if their plans will change with the advent of new emissions technologies.
I agree the EPA could have handled the diesel emissions issue much better here in the States. Regardless of that, our air quality has definitely benefited from the tighter emissions regulations we have here.
Diesel emissions technology sucked early on. In recent years, especially with the addition of SCR/DEF, they have become more reliable and efficient. I predict that trend will continue, so long as there is a strong consumer demand for diesel vehicles.
The egr system is more of a handicap and opens up more avenues for problems. Byes, a deletion would absolutely increase longevity and durability and dependability. Cummins only installs them bc they have to if they want to sell any motors.
By how much would a delete increase engine longevity? I think people who make those kinds of statements are relying on anecdotal evidence. The modern emissions-laden (SCR) trucks have proven to last just as long as the older, pre-emissions ones. Don't buy into the hype.
Sure for Northamerica it isn't big deal about fuel quality - here in Europe it is, soon after leaving the EU the fuel quality drops bottom less, a lot of people and commercial transport companys have problems because of that.
That's valid point, for now. Eventually the rest of the world will want to stop breathing crappy air and they'll get on board with the ULSD and diesel emissions strategies. It's only a matter of time.