dpf/egr delete

[mpaulson]

I just finished installing the h&s dpf delete and the egr delete yesterday and there was no change in the mpg reading in my truck compared to before the delete kits were installed. I have had the edge juice with attitude in for about a month and it made a 3 or 4 mpg difference by it self. From what I have read here is that guys are seeing about a 6 to 9 mpg difference once they do the deletes. Has anyone else had no change after the deletes were done??

What's up with that??

 

[gsbrockman]

Hand calculations (versus the overhead) are much more accurate in determining fuel economy changes with respect to different modifications.



Did you have much difficulty in removing the middle hanger ?



Greg

 

[Forrest Nearing]

yeah, a box or injectors throws the overhead out the window

 

[mpaulson]

It wasn't to bad, I took the filters out separately. As for the mpg calculations, I haven't done it by hand yet, but before I put the chip in I got a benchmark to work with by getting out on a flat highway and setting the cruise control at 110 km/hr and resetting the mpg readout and seeing where it averaged out. Then I did the same when I put the chip in and seen the average go up to around 18 mpg empty. It was around 13 to 15 before the chip. now with the deletes done, it is still around 18 mpg. While towing my 30 ft travel trailer that weights 7800# (before deletes) my mpg. is exactly the same as my buddy who has the same truck (stock) and trailer while following eachother down the highway. I haven't done this since the deletes were done. I will this week coming up though and I hope I see some difference in mpg compared to him or what the heck did I spend my money for and jeperdise my warrenty for??

 

[Forrest Nearing]

did you get a program to take care of the regen?

 

[mpaulson]

Not that I'm aware of. I've got the same setup as the owner of NADP has in his truck. that's one that I haven't heard yet. I thought that the regens wouldn't happen because there would be no backpresure to trigger one. The edge attitude clears all codes on start up, so I haven't seen any and it also tells you when a regen starts and it hasn't done that since the deletes were done, which was only yesterday, so I haven't got enougth miles on yet to see what is yet to come.

 

[Forrest Nearing]

cool, I wasn't sure how that all worked

 

[courierdog]

There are 5 versions (Stages) of the DPF Delete Systems.
1. Delete DPF Equipment only
2. Delete DPF Equipment and clear codes on start up with Electronic Box
3. Delete DPF Equipment, Electronics Box to fool system into thinking the Equipment is still operational, Electronics Box to clear Soft Codes on Start Up
4. Delete DPF Equipment, Electronics Box to fool system into thinking the Equipment is still operational, and does not require Active Regen cycle, Electronics Box to clear Soft Codes on Start Up
5. Delete DPF Equipment, Electronics Box to fool system into thinking the Equipment is still operational, and does not require Active Regen cycle, Electronics Box to clear Soft Codes on Start Up Totally CODE FREE
The whole process is very much "Caveat Emptor"

 

[Vaughn MacKenzie]

but before I put the chip in I got a benchmark to work with by getting out on a flat highway and setting the cruise control at 110 km/hr and resetting the mpg readout and seeing where it averaged out. Then I did the same when I put the chip in and seen the average go up to around 18 mpg empty. It was around 13 to 15 before the chip.

Have you done hand calculations before & after the chip. . . like mentioned whenever a box ("chip") or injectors are added it causes the overhead to read much higher MPG than actual. Chances are you actual MPG may have improved from 13-15 to only 14-16.

 

[jelag]

When these systems first came to cars, there was an attempt to remove them, but the emission testing programs in most states now require those items to be on the cars and working... I'm sure we'll see these firmer laws as we approach 2010 when the real laws go into effect..... Your in Alberta where I venture to guess there is no testing of diesels... ...

On the cars, most owners didn't see a lot of changes and I'd expect that if you see 1-3 mpg increase your doing well...

The long and short of it... is that the EGR system functioning correctly is an economizing device... think about how and what it does... but in fact at cruise, when most of the NOX is created, the EGR system adds back some exhaust gas when the engine doesn't need the power and filled the combustion chamber with inert gas (exhaust) thus creating a smaller explosion in the combustion chamber and will economize... You could do the same by correctly metering in any inert gas.....

 

[Vaughn MacKenzie]

Actually on a diesel it's the other way around. . . since diesels run cool when lean (ie, cruising) the NOx emissions are highest in high power, high boost situations when combustion temps are highest. EGR may help MPG a bit on a gasser but I don't see how it would help on a diesel, the more O2 available the more BTU you should get out of the fuel injected.

 

[HeberRam]

I have done both the DFP and egr delete. I was getting 9. 5-10 miles per gallon pulling my 5th wheel and averaging 15-16. 9 empty ( all hand calculated). After the deletes, I'm getting 20-20. 5 MPG (hand calculated) driving empty. On level #5 on the Edge Additude is my best mileage and performance. This is not Granny driving but mostly Hi-way 75 MPh up and down 5700' elevation to 4700' on average. One thing I did was throughly clean the entire system before putting back everything, ie. Egr valve, intake, turbo, and bypass line. Also blocked off the bypass line inadditon to the block off plates. 2000 trouble free miles so far, and 7000 miles on the truck. No fuel in oil like some are experincing, egt's down avg. 150-200*, no need for turbo timer anymore, more seat of pants HP, smoother acceleration, etc. I will dyno my truck soon to determine HP at stock setting and various other settings on the Edge. I wish I had dynoed my truck before the delete, to determine if any gain HP wise with just the delete.

 

[RVanWagnen]

iv'e done about every delete you can think of, and the latest being the removal of all egr equipment and cooler. we replaced the big screwy manifold and VGT with an ats 5. 9cr 2 piece and a custom made II silver bullet 66. the mileage and all arround performance of this truck is now excellent. the next step is going to be a modded rail

 

[ARichards]

are you running a 5. 9 CR ECU? HOw about injectors? Are they the stock 6. 7 ones? Please do tell or better yet post a new thread detailing how you did all this... . curious minds are well... . curious



and ya those modded rails should be awesome! can't wait... .

iv'e done about every delete you can think of, and the latest being the removal of all egr equipment and cooler. we replaced the big screwy manifold and VGT with an ats 5. 9cr 2 piece and a custom made II silver bullet 66. the mileage and all arround performance of this truck is now excellent. the next step is going to be a modded rail

 

[DKnotts]

Yes! Mr. RvanWagen PLEASE do tell! Very very curious as to the details of your installed/replaced items. Other than the engine brake function I've about had it with all this "new" for 6. 7L bs added on to my truck. O. k. the 68rfe works pretty good too... finally a good transmission.

 

[RVanWagnen]

we"ll post pics and some info on how it was done when the truck is compleat. its not just taking parts off and replacing them... alot of head scratching. it is being built by Power House Diesel in Ohio, there also famous for there p-pump conversions on a 3rd gen common rail. i think we will have the first 6. 7 really modified that isnt built by a place of unlimited resourse like the PDI truck in diesel power as i am funding this out of my own wallet... should be neat

 

[mpaulson]

I have gone on a trip with the modified truck now and am not impressed. My buddy with the same truck and slightly less load got pretty much the exact milage as me. I also feel the truck is a bit sluggish on small hills when cruising at about 2250 rpms in fifth gear, no better than stock even with the attitude in 2,3 or 4 settings. I'm starting to wonder if somthing alse isn't right. has anyone else done these mods and felt that there wasn't much change?

 

[DieselLady]

There are 5 versions (Stages) of the DPF Delete Systems.

1. Delete DPF Equipment only

2. Delete DPF Equipment and clear codes on start up with Electronic Box

3. Delete DPF Equipment, Electronics Box to fool system into thinking the Equipment is still operational, Electronics Box to clear Soft Codes on Start Up

4. Delete DPF Equipment, Electronics Box to fool system into thinking the Equipment is still operational, and does not require Active Regen cycle, Electronics Box to clear Soft Codes on Start Up

5. Delete DPF Equipment, Electronics Box to fool system into thinking the Equipment is still operational, and does not require Active Regen cycle, Electronics Box to clear Soft Codes on Start Up Totally CODE FREE

The whole process is very much "Caveat Emptor"

This doesn't seem right. If you just delete the DPF your engine will derate and there is no point in buying a kit.

The delete kit I got from H&S killed the Regen and you will know cause the Juice will always say off on Regen. BUT, I did not notice a big increase in economy until I blocked the EGR. You are still going to have 5 injection events just not regen.

These trucks have 2 pre injection events, 2 main injection events and 1 after injection event for emissions and then Regen on top of that. Real numbers are more like 3 mpg total will all deletes and blocks in place.

 

[mpaulson]

I have done the egr delete which I assume is the same as blocking the egr.

 

[DieselLady]

I have done the egr delete which I assume is the same as blocking the egr.

Yes. By the way, I just got done doing a service on a new 6. 7 with only 3000 miles on it. The oil was coal black and actually felt gritty, stained the concrete where it missed the pan. So on that note I checked to see how long it had been since I changed my own oil. 3000 miles ago, almost to the T. Walked over and pulled the dip stick to see just how it compared to the new truck. I swear it was only barely sooty. It still looks clear for the most part and I am one happy camper. Considering the amount of ware I am preventing on my truck, and the cost of Oil, which just went up to more than $11 per gallon, I feel very comfortable changing the oil well into the 7500 mile range. This will pay for the cost of the Juice that I have to clear codes on start up easily. Oo.