Lets talk DEF / DPF delete

Yes, it does.

 

NOx is caused by lean burn not “too much fuel in exhaust” seeing as how diesels control rpm and power by limiting fuel amount and not air amount like gas engines they always run “lean”. So they recirculate the exhaust gas to try and burn up some of the remaining oxygen.

Who remembers the VX Civic of the 90s? It had lean burn mode that would lean it out on hwy to get crazy mpgs until EPA said no no to that cuz the NOx was too high.

but everything else is correct. EGR is the debil.

 

EGR is the worst of the worst when it comes to diesel systems. I’d take DPF, no limp mode for def and no egr all day

 

If this was something so easily repeatable and doable, there would be more than 1/1000th of the Cummins owners reporting the same thing. But there's not.

Probably gets that good of mileage in your head because the Earth is flat, so you don't have to drive up any hills.

 

Or because his trucks computer says it's getting 27mpg.

 

NOx is formed from high combustion temperatures. Needs the high temperatures to form. Dealing with it for industrial burners.

 

High temps like what lean afr causes?

 

The overhead in my truck in my 2004 Ram was overly optimistic, on average, 2-3 MPG. But not that far off. The MPG average in my 2016 is quite frankly pretty damn close, if not spot on compared to my hand calculation.

Of course, when manipulated, I can get the average MPG to read 25-30 MPG too. Hell, even towing. Give me the right stretch of road for 3-4 miles and I can pretty much get it to read anything.

There's a reason none of these "27 MPG guys" like @cav115 ever post up these numbers and also show the miles driven since last the reset.

 

The egr is made to dilute the intake charge, not reburn any fuel.

 

Well, I rolled a 4500 mile round trip last summer in a 300k+ mile quad cab dually with a 5.9HO, 6spd manual, 4.10 gears and about a thousand pounds of payload.

Better than 3200 miles of it were at 2400rpm on the highway.

Averaged 16.7mpg over the entire trip. Hand calculated.

 

16.7 = 27 MPG?

Edit: I'm not a super Ram truck expert, but by you stating HO, that's 2004.5 or later. I'm not aware of 4.10's being an option with the 6 speed, that's 3.73's. Only the 48RE got 4.10's. Of course that's assuming it's stock, FWIW.

 

Because I’m the one who claimed 27mpg…

 

Common core math?

 

My ‘01 was an HO 6-speed. 3.55’s
My ‘03 was an HO 6-speed. 3.73’s
My ‘05 is an HO 6-speed. 4.10’s

When I get home I’ll send you my report card from a prestigious university along with the window sticker

 

HO didn't come out until 2004.5.

 

Just happy to see you acknowledged the totally irrelevant response.

 

Shoulda quit while you were behind

 

My Mazda averages 37 MPG on the highway, carrying 2 people and one dog.