DPF delete by my friend

[4wheels]

Well , I spoke to him just yesterday , he said that everything has been working just awesome . He said he likes the way it drives and it does get a better fuel economy and it has more power and so far ( if you all want me to say --- so far--- ) no limp mode after almost 13k dpf free miles .

[gary 32]

Ponder this question,

Has anyone taken a good running Sprinter, no codes or issues and bashed a nice straight hole through the dpf then put everything back together? Aside from less back pressure why would the computer care?

4 wheels is your 08 170 passenger running better now?

[4wheels]

Originally Posted by gary 32

Ponder this question,

Has anyone taken a good running Sprinter, no codes or issues and bashed a nice straight hole through the dpf then put everything back together? Aside from less back pressure why would the computer care?

4 wheels is your 08 170 passenger running better now?

My 08 170 passenger is in like new condition . I just changed Mobil ESP oil, I do not have any codes , I do have a DPF filter and I like it . My DPF is untouched and will never be. I just returned from 2200 miles trip and my Sprinter ran like new one . I got a good gas mileage and a lot of power to spare .

[Texas Diesel Guy]

Originally Posted by OrioN

CEL in a gasser is much less an issue that our diesels.

THE CEL WAS ON INDICATING THE GLOWPLUG(S) OR GLOWPLUG SYSTEM HAD FAILED.
THE GLOWPLUG SYSTEM IS AN INTEGRAL PART OF THE EMISSIONS SYSTEM AND THE DPF FUNCTION/REGENERATION.

He was misinformed or ignorant.

Dude, are you serious? an "integral part of the emissions system", really? Its a cold start aid and doesn't have anything to do with the DPF or anything part of the engine after its running.

DPF is the one of the dumbest ideas dreamed up yet. This is how I think that started...
"Hey, I know, we'll capture all the particulates in the exhaust to keep them out of the environment"
"Wow thats brilliant, but what do we do with all the crap when this capture device is full?"
"Hmmm, well lets dump raw diesel in the exhaust while the engine is running to burn it out of there"
"Right...but if we're going to just burn it out of there, why did we bother capturing it in the first place?"
"Oh it will only work a few times, then the device will have to be replaced with a new one"
"Hmmm, so let me get this straight, we're going to invent a device that captures particulates in the exhaust, sort of self cleaning by burning it out, no doubt very expensive to replace, and ensures lower fuel economy, lower performance, and higher maintainence costs, its great!"

Yeah, thats brilliant guys.

There is NO argument that DPF deletes yield better power, and better fuel economy. Why isn't improving fuel economy priority 1? If we reduce the amount of fuel we consume, demand goes down, foreign dependancy on oil goes down, prices go down, operating costs go down and less fuel is burned, thus less emissions. DPFs arent for the environment, they are for beaurocrats and big oil. And don't get me started on EGR valves!

"Hey lets reduce emissions by recirculating exhaust back in the intake"

"Wow that will very effectively reduce exhaust volume... but won't the exaust be harmful to the engine? Kind of like cuffing a fart and inhaling it to make is stink less?"

[Texas Diesel Guy]

Originally Posted by gary 32

Ponder this question,

Has anyone taken a good running Sprinter, no codes or issues and bashed a nice straight hole through the dpf then put everything back together? Aside from less back pressure why would the computer care?

I've replaced one in an '07 for "testing" purposes with a piece of straight pipe...though I think the customer isn't planning on ending his "test" drive anytime soon. He says he's getting 22MPG where he was getting 17 driving the exact same route, and it has more power than ever before. Yeah it set a code for DPF performance... but no derate so who cares.

[4wheels]

I did not want to write anymore about this , but my bud was at my house a week ago , he was installing seats in his van and was measuring in my passenger for the holes , for brackets. So I asked him again and he said the same thing - the light for dpf is on , the truck drives like never before , he gets a BETTER mileage , and there is more power , and at 200k+ miles THERE IS NO SMOKE , and also NO LIMP MODE !

I was thinking that if it WILL go into limp mode , then why even bother it . Now ,if someone will make and sell an empty dpf , I will buy it and try it and when I will be selling my truck , then I ll put that original DPF back .

[flman]

I call it a "BDP" "Bio Diesel Preventer", a scheme thought up by big oil, and paid for in the pockets of pawns. Who are your masters, big corporations, you vote for the pawns.

[gary 32]

Orion, Icarus we have a new forum sage:

"Wow that will very effectively reduce exhaust volume... but won't the exhaust be harmful to the engine? Kind of like cuffing a fart and inhaling it to make is stink less?"
Thank you TDG.

In the interest of science and the further development of mankind, "a friend of mine" removed his dpf core, welded it back up and at the tailpipe you would never know and no codes, ran better in every way with only 10% mpg increase. His van was already tuned so the power output was increased only slightly.

Step 2 he blocked egr recirculation with a copper gasket, P0402 low eg flow and P1451 evap control canister vent solenoid circuit codes appeared but it runs really clean and fine.

[flman]

Originally Posted by gary 32

Orion, Icarus we have a new forum sage:

Kind of like cuffing a fart and inhaling it to make is stink less?"
Thank you TDG.

Also known as being smug, hybrid drivers have been known to do this.

[gary 32]

Originally Posted by flman

I call it a "BDP" "Bio Diesel Preventer", a scheme thought up by big oil, and paid for in the pockets of pawns. Who are your masters, big corporations, you vote for the pawns.

Bob, Our NCV 3 fueling systems would not live well on straight biodiesel either.

Friends results after installing empty can dpf:

-Dpf core was clean, but it seemed to be in almost constant passive regen, had high egr flow and 10-20% mpg decreases from historical with power cuts for high egt's.
-Before tail pipe was rust colored with almost no soot. After pipe is black with almost no soot.
-Power and response are improved.
-With just the tune: 19 mpg average.
-Same tune and dpf core removed: 10+% mpg increases but only with a light foot otherwise mpg is unchanged.
-No codes or cel with tune and empty can.
-Egt's are reduced 70-100 degrees, 150 degree reduction @ idle
-Results will follow for dpf/egr delete written into existing tune only if there is positive interest.