EGR on 5.9

[CKelley1]

ddp is the best, we just changed the nozzles. the cost was $800

 

[NavyDood]

you most likely have a 04. 4 the 04. 5 has the in-cylinder egr. you will cause excessive wear if you tried that on a 04. 5. ah64id a 50 hp nozzle change helps the mpg and oil more than what we were expecting, give it a try

Yes. I have an 04. It's right there in my signature.

 

[AH64ID]

Yes. I have an 04. It's right there in my signature.

But it just says 04, not 04. 0 so it could be a 04 or a 04. 5.

 

[NavyDood]

LoL. Well excuuuuuse me... .

 

[Tinman]

If the Smarty kills the third event it would be a recent change. I stopped using Smarty SW about a year ago and I can assure you that at that time my Smarty sw had the 3rd event. That being said my truck now has only the pistons as the last emission compromised part (proper cam, timing, no third event and larger exhaust housing turbo). And my oil is still black soon as it is cranked up after fresh oil. The 01 oil will stay clean looking for several thousand miles after change. I think the 01 is just getting broke in good at 190K. 06 must still be settling in at 85K:-laf

 

[Regcabguy]

Black oil seems to go hand in hand with diesels.

The '92 4cy Hino I drove for 244K at work blackened out the oil in no time also.



Our Honda Pilot's oil looked better @ 5K than my '07 does 10 minutes after an oil change.

 

[Motorhead]

Ok. So I have a Smartyjr and what download do I need to kill the third inj. event? I have never upgraded my Smartyjr since I bought it in '07

 

[AH64ID]

I would go to the website and download the latest, much better software than the original software.

 

[Motorhead]

I would go to the website and download the latest, much better software than the original software.

Have they made it any easier to download???

 

[AH64ID]

I can't say, I never found it difficult.

 

[Jim Ross]

The last I knew it would not download with a Mac, but that was over a year ago.

 

[p-Bar]

I just updated smarty and truck so I will see what mileage difference there is

 

[p-Bar]

well no mileage gains

 

[Bob4x4]

well no mileage gains

Not surprised,after a certain point bsfc is very hard to improve

 

[cerberusiam]

I just updated smarty and truck so I will see what mileage difference there is

Your not going to see much mpg gain by turning off the 3rd event because it doesn't come into play until parameters dictate it, typical high load and high rpm.



The 3rd event is keyed specifically to reduce combustion temps to limit the creation of NOX. That doesn't happen until peak temps and temperatures. In order not to loose the power band the main injection event was extended to cover what was a distinct event.



Even on a minimal tune you would have to drive the snot out of it the same way with the same loads to see a difference. Likely there will be no discernible difference because the power levels are relatively the same.



Mpg gains are made by low loads in the BSFC range of a 3rd gen, 1900-2000 rpms. HP is made in the upper rpms where the 3rd event had a use.

 

[p-Bar]

Interesting I thought I had read something quite along time ago that the third event was to keep the cat hot so it would perform the smog function. Thanks for the input

 

[cerberusiam]

That was an early assumption based on gasoline technology. The CAT's on the diesels are not a catlasytic converter in a true sense. They are more a passive DPF meant to trap the particulates created by the incomplete combustion that is used to lower NOX emissions.



Modern diesels run stoich rich to keep cylinder temps under control and still deliver the power. The side effect is more particulates that cause pollution so the CAT, for lack of a better description, was added to trap as much as possible of the unburned molecules.



These units only need about 600-650 EGT's to operate effectively. Thats pretty typical of normal operating temps so there really is nothing special needed to make them work.

 

[Bob4x4]

That was an early assumption based on gasoline technology. The CAT's on the diesels are not a catlasytic converter in a true sense. They are more a passive DPF meant to trap the particulates created by the incomplete combustion that is used to lower NOX emissions.



Modern diesels run stoich rich to keep cylinder temps under control and still deliver the power. The side effect is more particulates that cause pollution so the CAT, for lack of a better description, was added to trap as much as possible of the unburned molecules.



These units only need about 600-650 EGT's to operate effectively. Thats pretty typical of normal operating temps so there really is nothing special needed to make them work.

So a cat on a diesel is a trap and does not oxidize the hc and co ??

 

[Hawk]

Ok guys, I have read tons about the Cam and don't want to get into a ******* match about it but I wanted to change the Cam in my last truck and never got it done and so since this truck is my last I'm planning on changing the Cam. The plan right now is to purchase a F1 Helix 2 and the springs recommended for it. Will this Cam be sufficient for a set off the shelf twins and 50-100HP nozzles? The fuel mileage on the 04. 5 and newer trucks has been pretty bad (for me anyway) My 03 would get 21/22 empty all day long and generally 16/17 yanking my trailer. So I'm trying to get back to those type of hand jammed no. s

 

[Regcabguy]

I believe one member, AMC McCormick swapped out his cam but hasn't seen the great mileage gains claimed. Regardless,unless you drive a lot it would take forever to recover the expense.



I'm still waiting for the 275-80-17's to be made. Tall blades.



Concerning the cat,whenever I remove Smarty, high rpm bursts of speed spits out bookoo smoke for a few runs. I think the lower rpm fueling doesn't allow the cat to get hot enough to burn off the soot.