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EPA's 5-year investigation results on diesel pickups

it was a bit harder back in the day to get a clean tune. especially when stacking pressure boxes onto each other. now days there's really no excuse.
 
Question: older Diesel engines with DPF/EGR will be difficult/costly to remain compliant ie 2007-2010. Will these older vehicles get a free pass if they’re older?

A lot of people own a diesel truck but don’t understand how the emissions systems function nor do they understand how to operate them properly. Some applications don’t allow proper operation of modern Diesel engines for the health of emission systems. Those that make the rules most certainly not understand.


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Question: older Diesel engines with DPF/EGR will be difficult/costly to remain compliant ie 2007-2010. Will these older vehicles get a free pass if they’re older?

A lot of people own a diesel truck but don’t understand how the emissions systems function nor do they understand how to operate them properly. Some applications don’t allow proper operation of modern Diesel engines for the health of emission systems. Those that make the rules most certainly not understand.


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The way these things work is older OE equipment is typically grandfathered in until it becomes either unsupported (manufacturer stops producing parts) or the aftermarket drops it and then they become crazy expensive to maintain. If you're asking if they'll have to meet new, higher bars, that's highly unlikely and there's no precedent for it. If you're asking something like: "this pos EGR system from 2007 doesn't work any more and it costs a lot to fix", tough luck.

Not understanding the law or how something works is never an excuse to not follow the law (again precedent). This will probably not be popular to hear, but those that write laws don't do so in vacuums (e.g. ultimately your politicians and the lobbyists that influence them are the ones responsible for passing these things). The automotive industry chose a long time ago to bail on diesels which is why things like this are happening now. I know MEs that work for the big three in Ohio and Detroit; they will all be the first to tell you the industry stopped truly advancing diesels in the mid 2000s and have been applying (expensive) bandaids to limp them along. Gas engines on the other hand have very much advanced with the times. As @Firebird said earlier in this thread, writing has been on the wall. Pre-emissions diesels are going extinct or will be on the Barrett-jackson block in the next 15 years going for high 5 figures when the truck kids born in the 90s start hitting their 60s.

OA
 
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