DEF Systems Can Now Be Disabled if they Fail

[redbaron]

Had a catastrophic failure where the entire DPF fell off. Temporarily fixed it with a straight pipe and software update.

 

[Porterhouse]

It may be a good time to proceed with the rest of the diesel delete.

 

[redbaron]

It may be a good time to proceed with the rest of the diesel delete.

Oddly these fell out as I was collecting the DPF.

 

[Porterhouse]

I could never understand how anyone could come up with such an emission system that, in the name of lowering the concentration of a relatively harmless and natural atmospheric gas (NO2), destroys engine efficiency such that millions of gallons of extra fuel have to be needlessly burned each year. I hope the new EPA gets rid of these NO2 standards. They have no impact on global NO2 levels and are only useful in a handful of situations that can be dealt with locally.

 

[redbaron]

the one and only positive effect of the DEF system is the removal of the smell. This is more obvious when idling for a period of time.

While the GHG rules were repealed in 2026, NO₂/NOx vehicle emission standards were not affected or removed.

For the most current official details, check epa.gov/regulations-emissions-vehicles-and-engines.

 

[Holdmybeer]

I could never understand how anyone could come up with such an emission system that, in the name of lowering the concentration of a relatively harmless and natural atmospheric gas (NO2), destroys engine efficiency such that millions of gallons of extra fuel have to be needlessly burned each year. I hope the new EPA gets rid of these NO2 standards. They have no impact on global NO2 levels and are only useful in a handful of situations that can be dealt with locally.

Regardless the DEF debate, I don't have a dog in that hunt, but this is for sure, NO2 isn't a relatively harmless and natural atmospheric gas.

 

[Porterhouse]

Regardless the DEF debate, I don't have a dog in that hunt, but this is for sure, NO2 isn't a relatively harmless and natural atmospheric gas.

Beg to differ. NO2 is a vital part of the nitrogen cycle that fertilizes plant growth. While farmers spend billions putting nitrogen into their plants, nature does it through the nitrogen cycle. Most atmospheric NO2 is actually generated from lightning strikes, not diesel engines. Its concentration is measured in single digit parts per billion. It is completely harmless in those concentrations. It is normally washed out of the atmosphere during rainstorms. In some areas though, like Los Angeles, for example, or in the vicinity of coal fired power plants, it can build up to undesirable concentrations of 50 ppb, but these situations can be dealt with locally.

 

[redbaron]

Oceans, volcanoes, lightning, forest fires, and stratosphere entry are all natural sources of NO2.

 

[Holdmybeer]

Incredible

 

[redbaron]

To get this thread back on topic…the engine runs so much better with free breathing.

I am told that the improvements to the 605 engine give you a switch in demand to add 39,60,90,120,150 hp. In addition I am told that the first hand experience is that with setting of 60, the real world seat of the pants feels more like a 700hp and the mileage improvements are 1mpg.

The cost of the turn key is $2500 and you can keep the parts to return to oem spec.

If anyone in the DFW would like to have the diet plan for themselves I can make a referral. I do not have any financial interest in this service.