If you drove a new one you would have a hard time not buying it.....Yes the emissions stuff is a pain but that's just the way it's gonna be if you want a new diesel truck.

 

I replaced the exhaust system.
The EGR is next.
No Federal laws broken I live in Canada but did purchase the kits from the U.S.

 

That was my main concern. Then I found an 07 cab chassis that had the old price and no $995 blu-tec on the window sticker. I was hoping I might have gotten lucky, but saw the EGR system under the hood and figured the GIANT cat probably housed the DPF also. Not only is it 305hp, but I can't find software for it. I can't imagine people are going to be ok with giving up 5-20% on mileage just to get rid of a little soot. There are 06 trucks driving around pouring out black smoke and I'm paying $50 a month to cut out the same amount of soot they spew on the way to work. I had the superchips tow program on my 06 with 150K and never saw anything more than a slight haze every now and then- nothing that even approached what the cleanest semis put out.

 

AMEN! Right now, the U.S. is at the forefront of emissions technology and implementation SO, IMHO, the EPA should back off until other countries, like China, catch up and start their own emissions programs. We are killing our economy trying to 'save the world' while emerging nations are ignoring their emissions output and are, as a result, beginning to bury us economically.

 

Yeah.....

We should wait until OUR cities look like this to act to clean up our environment.

Good plan.

 

It's the same old idea that lower RPM always equals better mileage. It doesn't. The engine still is doing the same work pushing the vehicle down the road regardless of it's RPM. The differences are in it's own internal friction and efficiency at different RPMs. Lower RPM does not always equal better mileage. Especially if it is operating below it's designed power band. If lower RPM was always the answer, we'd all be running around on the highway at 200 RPM.

Actually,you had not taken into account internal friction of the engine. Thus, the lower the RPM, the lower the internal friction (also energy loss i.e. momentum). As long as the engine can engine can handle the lower demands without knocking, the better the mileage! Also the lower the RPM, the lower the engine temperature (fuel lost to increased heat).

 

The photo pretty much looks like LA in the 70's........

 

Ive noticed as I drive both an 08 3500 6sp Auto 4x4, and a 06 3500 auto 4x4, just how completely different they are, and why. Where you can lug the 06 in OD, with or without weight behind it creating a slight haze from the tailpipe(not horrible, but you know its there), the 08 quickly downshifts, as to not lug the motor, and create excess soot. Its all part of keeping the emissions down.

BTW, the 08 bought in Feb of this year, has 42k on it already, all highway, with a 42ft trailer. Had 1 egr code set about 4k ago, went off shortly after, and havent had a problem since! The 08 on the bottom end will out pull the 06 by a long shot! Only until you get up to speed does the 06 out pull the 08. That variable vane turbo makes a huge difference on the bottom end of the 08, but you can feel the DPF choking the truck in the upper RPMs.

On a side note, does anyone know exactly how the computer senses the DPF is getting full and when to go into regeneration? Does it sense backpressure before the DPF vs after?

Kyle

 

i love emissions, job security for engineers




...they just dont know i use a smarty! Love how nobody blames the extra .8L of displacement. Yea, its got emissions, but its also a larger engine to begin with. Almost like having an extra cylinder sucking fuel.

 

That had nothing to do with the new emissions that are on our trucks. Whether you blow smoke or not a diesel engine still produces the "crap" that the EPA is trying to regulate.

 

If that is not misleading or what!!!!!!!!!!!!!

What you do not see is all of the fields and other crap burning out side of the city as the wind brings the smoke into the city

 

i'm with jim if we have to have emmisions, everyone should! china's killing us! we do the good ,and we have to pay for it!

 

we can only be responsible for our own actions, we must do what we can to protect our health and our enviorment. it is big business from this country in part that has used other countries with out emmission controls to produce products that are unsafe to produce and illigal to produce here. remember when we buy something made in china we are part of the problem.
we should be working to produce the extra power and mileage from our vehicles with clean technoloy. it is our lives we are destroying when we don't.

i did notice that not all of you have stated your rear axle rations and those that did do not have the same gearing, so maybe that is part of the issue.

 

The emissions on our truck is nothing but a money making gimick that people are falling for.

One day asprin is bad for you and the next day it is good for you. When the research fund runs out lets tell them we are wrong so we can get a new grant, **** Money Making Grants

 

You must not be an engineer, because that's an ignorant thing to say^^.

The extra .8L of displacement is not "sucking fuel." Fuel delivery in a diesel engine has nothing to do with displacement.

The extra displacement actually reduces emissions a good bit by lowering power density.