Originally Posted by Willx
I have always loved the 3.0 Diesels (at least since the Urea models). Frankly when they came out with the Urea version, they all got more powerful and efficent. I have a feeling they were under tuning due to emission before.
I hadn't thought about this possibility. Maybe I need to get a tuning chip for my big 425hp Cummins to change this. My post ULSD pre DEF diesel has no odor at all to the exhaust; the new versions of that engine have DEF systems. I hadn't thought about the possibility of a tuning difference between pre and post DEF diesels.
Since there are no emissions tests on any vehicles or engines in Florida, I may consider un-detuning if possible to increase efficiency. Especially if CO2 emissions per mile driven are reduced.
In the USA vehicles that are more efficient don't have lower emissions; in Europe vehicles that are more efficient almost by definition have lower emissions. Less combustion means less CO2. The definition of emissions is per mile driven in Europe and per gallon burned in the USA. So you can have a vehicle spew out 1000 times the CO2 than another vehicle in 100,000 miles driven and be considered by the EPA to have lower CO2 emissions. EPA regulations mandate higher emissions; I think they should be changing their name to the "Environmental Destruction Agency".
So based upon this, it is no wonder that it might be taking time to get that "VM Motori" to spew more stuff per mile and less per gallon.
There is one upside to the regulations in the USA; emissions technology has advanced further because of EPA regulations.
2014 Jeep Grand Cherokee Overland 4X4 | Black, Inside and Out
5.7 liter HEMI | ORAII | Advanced Technology Package(w/ stop)