To "delete" or not to "delete"

ShinerBock wrote:

6.6 Oilburner wrote:


What?!?! Thats the most foolish thing I have heard. The purpose of the Diesel particulate filter is to reduce emissions, as is the EGR. The DEF is intended to make regens cooler and healthier.

Well I am sorry if the truth sounds foolish to you, but it is true.

Diesel particulates are not necessarily harmful to the environment(as in the ozone), but are very harmful to people. They cause a whole host of respiratory issues and contains multiple particle that are very carcinogenic(causes cancer). I remember reading an internal newsletter when I was at Cummins about an study done by another group on how likely you are to have respiratory health issues the closer you live to major highways. If I recall correctly it was a very substantial increase the closer you live to these highways. Some people tend to think that they are somehow getting back at a Prius driver when they purposely emit black smoke, but in reality all they did was raise the chances of those around them getting some for of respiratory illness in the long run especially in the elderly. Oh, and they also caused the rest of us money via taxes (since we pay for Medicare) and through higher insurance premiums since respiratory illness like lung cancer costs out the wing wang(which makes our health insurance rise).

Due to the compression ignition of a diesel, diesel particulates are very fine and can easily get trapped in small places of your lungs. This is why Diesel Particulate Filters(DPFs) are used to trap the fine particles, collect them, and then burn them off as ash to store in the filter. This is why the new diesels do not emit black smoke.

The EGR and SCR/DEF systems are there to remove nitrogen dioxide/nitrogen oxide(NOx) from the exhaust. NOx is very harmful to the environment and humans. It dissolves in moisture in the atmosphere causing acid rain. With the old engines like the OP has that had an EGR as their only means to reduce NOx, the EGR system was always being used to introduce cooled exhaust gas in order to lower combustion temps which lowers NOx. The drawback to this is that it creates more soot which clogs the DPF filter quicker, and it doesn't allow the engine to run at optimum temperature therefore cutting power and efficiency.

With the new SCR and EGR combination in the new engines(GM & Ford 2011+/Ram 2013+), the EGR is only used at startup when the SCR catalyst is not hot enough. Once the SCR is hot enough, the EGR valve shuts and turns the job of removing NOx to the SCR which turns it into harmless water vapor and nitrogen. Since the EGR is not being used as much and the NOx removal is outside of the engine; this allows Cummins to tune the engine for optimum power and efficiency. The higher combustions temps also create less soot which clogs the DPF less which in turn requires less regens further increasing efficiency.

So I will say it again, the DPF is there mostly for human health while the EGR and SCR/DEF system is there for mostly environmental reasons.

Also, remember to thank the next person you see "rolling coal" for not only increasing your chances of health issues, but also costing you money just so they can be in the "cool club" and selfishly not care about those around them. Don't get me wrong, I am all for people being able to do what they want to do just as long as what it is that they want to do does not effect anyone else in any negative way. You want to blow black smoke? Sure, then just reroute the exhaust to your cab and put your A/C on recirculate. If you are not willing to do that then why are you willing to blow that **** on me or my family increasing our chances for an illness we can't afford when we get older?

I guess I assumed you meant health of the vehicle. Not human health.

You're grasping at straws if you think the boobs rolling coal for fun have any substantial impact on respiratory health. I'm quite confident the trucking industry dwarfs whatever particulate matter output these idiots drawing attention to "diesel motorsports" is.

I'm not saying forward movement isn't good. But at what cost? These systems were implemented before the technology was ready, and the technology has just about caught up with the requirements as they continue to advance.

So you are worried about the tax dollars you think you spent treating a cancer patient that lived near a freeway, and I am more worried about the dollars I KNOW every consumer indirectly spent on tow bills, repairs and downtime for many of trucking compnanies moving goods we consumer every day.