The Big Three's New Diesels put on a Dyno
Here is the TFL video The results are... Thanks! Jeremiah
Forum Discussion
ShinerBock wrote:Huntindog wrote:
A couple of weeks ago, I had to take one of my cars thru emissions. When I pulled in, they hooked it up, then came over and told me that their testing equipment just failed a test that is done between vehicles. They would need to recalibrate it before testing my car. It took about 10 minutes. I have tested cars many times, and never experienced this... I was somewhat apprehensive as I did not want to fail ( A big PITA) but it went fine.
What it showed me is how fast something can go wrong with testing equipment. It worked fine on the car ahead of me, and was out of spec immeadiatly after that car.
One thing is certain. As time goes on, there will be many more tests. At some point it will be pretty obvious if this test, with its large disparity of on the Dmaxes results is actually accurate, or if something went wrong.
Texas only has an OBD emissions certification for their inspections on vehicles from 1996 and up meaning that they only hook up an OBD to make sure there have not been any emission faults. Emissions inspections are only for Houston, Austin, Dallas-FTW, El Paso, and their surrounding counties so I am unsure why they would be inspecting your emissions all the way over in Abilene. Texas engine emission inspections are for gasoline engines only, not diesel. If they did have a faulty machine then it it was probably the probe detecting NOx, CO2, and other emissions not the actual dyno.
With a Dyno, it is very hard to be off from one to the next and if something was off then I am sure they would have caught it in the three pulls they did for each truck. ATS, the place that did the dyno, is is very reputable company in the diesel aftermarket world and they even host the XDP Diesel Power Challenge every year using that very same dyno in the competition. They know what they are doing and if something was not right then I guarantee you they would have caught it and fixed it.
The results are what they are. No need to worry about spilled milk or try to tarnish a reputable company just because you don't like the results. It is what it is and it ain't what it ain't.
AZ puts my pre OBD autos on rollers. No idea what was wrong with their equipment. Never had that happen before. I just brought it up as a possible explanation for something that doesn't really jive.
I am not trying to tarnish anyone's reputation, like you are trying to insuate.... Since when is it wrong to question?
My theory makes just as much sense as the others that have been proposed.
As I stated before, time will tell the story.
It did back in 2011 when nobody gave the Dmax any credit... But after many tests, even the most stalwart OB fans reluctantly admitted the truth.
There will be many more tests. The truth will become obvious, no matter what it is.
