There are days when i only do 20 KM (10 to work and 10 home), then there are days that i do over 400KM. Why is it that my regen always starts on the days when i do not driving? Is there a way to make it not start in the city? My last regen lasted almost 3 days and cost me a quarter tank of fuel$$$. I stopped at my parents house for an hour and by the time i went 10ft forward in regen had started up again:mad:

There are days when i only do 20 KM (10 to work and 10 home), then there are days that i do over 400KM. Why is it that my regen always starts on the days when i do not driving? Is there a way to make it not start in the city? My last regen lasted almost 3 days and cost me a quarter tank of fuel$$$. I stopped at my parents house for an hour and by the time i went 10ft forward in regen had started up again:mad:

Get a Tuner (Edge, Banks, etc), they let you control when you want it to regen. Not sure of which ones all have this feature but many of the new ones do

First I heard a tuner allows regen delay. But no way does a regen cost 1/4 tank of fuel in any conditions. My last city regen was .3 gallon more than highway regen.

See my post #39 for details of in-city regen:
http://www.dieselplace.com/forum/showthread.php?p=3154411#post3154411


And my post #11 here with today's start of a regen during the commute week:
http://www.dieselplace.com/forum/showthread.php?t=300189&page=2

dealer will void my warranty if there is a chop on it. They won't even let me put a water/meth injection kit on to improve my mileage.

I DID use a quarter tank. Shut the truck off so many time it had to keep warming its self up. Like starting all over every time.

Found an errand to run 20 miles mostly freeway - that easily finished the regen started this morning. Interestingly when I parked it soot was 22 - when I went out 5 hours later soot level was 14....... What does it do keep cooking after you park. :)

DIC MPG read 14.0 when started and 13.8 when complete - fuel gage hardly moved.

I think it would have been able to regen in 2 days commuting if it drops that fast.

where are you getting all these numbers (14 and 22)? Our Canadian trucks don't have a light on the dash or anything to tells us when we are in regen. I go by the sound of the truck an my EGT gauge.

When my truck goes into regen, it kills the mileage..... a lot more than .2 mpg

Found an errand to run 20 miles mostly freeway - that easily finished the regen started this morning. Interestingly when I parked it soot was 22 - when I went out 5 hours later soot level was 14....... What does it do keep cooking after you park. :)

DIC MPG read 14.0 when started and 13.8 when complete - fuel gage hardly moved.

I think it would have been able to regen in 2 days commuting if it drops that fast.
:)That is what I have seen. When both EGTs are around 1100 degrees, and it is really cooking and you turn off the engine the soot mass will sometimes drop 50% when you restart and go. Common sense would dictate that just because you turn off the engine that the fire in the DPF stays going. Pretty neat huh? I still think this regen thing is only as big a deal as you want to make it. :)

where are you getting all these numbers (14 and 22)? Our Canadian trucks don't have a light on the dash or anything to tells us when we are in regen. I go by the sound of the truck an my EGT gauge.

DashHawk. ;)

where are you getting all these numbers (14 and 22)? Our Canadian trucks don't have a light on the dash or anything to tells us when we are in regen. I go by the sound of the truck an my EGT gauge.
Jimmy has the Dashhawk, an OBD-2 monitor that displays up to 4 PIDs. PIDs are the readings from all the General's system sensors, which the ECM uses for engine & fuel management.

Dashhawk is a re-labled Edge Insight, sold by a corporate partner. My Edge Evolution is the same monitor again, but also has a built-in ECM tuner.

There are good reasons to add these dashboard monitors if you're whatever interested in how & why your truck performs. And there's simply no other way to really observe when and how the REGEN process operates.
(See next post.)

Jimmy,
Before losing the DPF, I constantly monitored both EGT1 & EGT2, plus the Soot level (as does wildcat, above). By reading post 39 in that other thread, sounds as if you're monitoring only one of those temperatures, the primary catalyst temp.

The Primary temp is tracking residual diesel fuel sprayed into the catalytic converter, and fluctuates widely due to driving conditions. This is akin to the gas burners in your kitchen oven, which cycle on/off to maintain the oven temp (the DPF) at plus-or-minus 1200 deg.

I had my monitor set to display both primary catalyst temp and secondary (DPF) temp, providing some added "insight" into the REGEN process. It shows the primary EGT quickly climbs to 1200, but fluctuates rapidly from driving conditions. But this exess fuel & heat gradually forces the secondary DPF temp up to 1200, which then remains there (within 120 degrees) for the entire process.

Descending a long hill, the secondary will fall too low, prolly suspending the process until more fuel is available. Level running will again show the primary pushing the "oven" up to cooking temp, about 1200. And you're right, the DPF absolutely "cooks" some of the soot after you park a hot rig, as from 22 grams down to 14 grams. If that's below the REGEN threshhold, then the ECM won't renew the REGEN when engine's started next time.

The display also has that REGEN telltale ("R") in the upper-rt quadrant. In my experience, the monitor rarely detected a REGEN status change until a Key-off, then restart.

There are days when i only do 20 KM (10 to work and 10 home), then there are days that i do over 400KM. Why is it that my regen always starts on the days when i do not driving? Is there a way to make it not start in the city? My last regen lasted almost 3 days and cost me a quarter tank of fuel$$$. I stopped at my parents house for an hour and by the time i went 10ft forward in regen had started up again:mad:

I`ve been told if it starts the regen process it is best to just drive it until it is over. Usually about 25-30 miles on the hiway.
Because it will start the regen again and again until it goes thru the cycle. This I do know for a fact.
If you remove only the muffler and replace it with a section of a 4" mandral bend pipe (pics in my garage) that will cut the regen process down to about only 10 miles.
The muffler is very restrictive plus if your concerned there won`t be much more of exhaust noise.
Plus removing the muffler the egt`s will drop about 100 degrees during the regen process.
The dealer cannot void the warranty from just removing the muffler.
If you cannot find a shop to do the mandral bend on 4" pipe there is a few other options,straight pipe angled or 1-4" S cut in half to make the connection.

I track all 3 EGT's. She did regen from 14 down to .2 today during the errand. I really don't mind the regen process like WildCat says......... Just like to know what the rig is doing like you say.........

My errand was visiting the local pinstriper - Finally made an appointment to do some Ol' Skool on the girl this Saturday.......... Wooooo-Hoooo......



http://www.myrideisme.com/Blog/wp-content/uploads/2008/03/2613.jpg

There are days when i only do 20 KM (10 to work and 10 home), then there are days that i do over 400KM. Why is it that my regen always starts on the days when i do not driving? Is there a way to make it not start in the city? My last regen lasted almost 3 days and cost me a quarter tank of fuel$$$. I stopped at my parents house for an hour and by the time i went 10ft forward in regen had started up again:mad:
Agree that it's frustrating to see soot level climbing while errands are holding me in city driving. As written above, any of the dash monitors (about $350) will permit you to watch soot levels, so at least you'll know when a REGEN might kick-off.

I must admit to using the engine monitor to help plan 'freeway errands' that cd provide 20 freeway-minutes. When soot levels climbed above 35 grams, for example, I could choose to go to that distant big-box store on a day when the REGEN was due.

If you spend another $350 for the Quad Stealth, then you'll be able to force a regen in your driveway, just as the Stealer might. But I only used manual REGEN a couple of times, after stuffing the DPF by using Quad's +110 horsepower. :badidea:

Manual REGEN is a painful process to watch, kinda like clearing constipation. My baby had to sit there in the driveway, cheeks puffed out at 2000 rpms, neighborhood listening to her scream, while she's trying to clear an impacted bowel~!!! That's enough to convince one to avoid an impacted DPF, and plan that Costco run to keep a happy girl runnin' smooth~! ;)

1- remove the muffler and replace it with a section of pipe (pics FOLLOW),
that will cut the regen process down to about only 10 miles.
2- The muffler is very restrictive ... won`t be much more of exhaust noise.
3- EGTs will drop about 100 degrees during the regen process.

http://www.dieselplace.com/forum/garageimage.php?do=full&p=73894&d=1221771211.http://www.dieselplace.com/forum/garageimage.php?do=full&p=73753&d=1221509912

Excellent feedback DRC~!! Never saw your theory before, but it seems logical.
Makes sense! If & when I re-hang my DPF, it will definitely be without the muffler.:cool2:

I have a ScanguageII from Linear Logic which has an advanced option for adding additional guages.

Does anyone have any codes which would enable me to know when the engine is in a regeneration mode?

Quote:And you're right, the DPF absolutely "cooks" some of the soot after you park a hot rig, as from 22 grams down to 14 grams. If that's below the REGEN threshhold, then the ECM won't renew the REGEN when engine's started next time.

My Regen with keep restarting until it finishes which seems to be below 1 gram of soot. Also noticed it doesnt trigger at any specific level of soot but by a combination of things. My 2cents

Mine triggers by mileage - every 425-450 miles. Last time I parked in regen at 4 grams of soot. Went out and it was .1 and all done.


I stayed at 50MPH to let the regen work at 1,000 degrees plus, then exiting and parked and turned it off to go into a restaurant for dinner when the DashHawk showed "Regen Active" and 4 grams of soot left. Came out, started her up and it read "Regen Not Required" and .1 grams of soot. Where that last 4 grams of soot went who knows.

do any of these dash hawk monitors put a signature on the ECM? My dealer is very touchy on that kinda stuff. I removed the muffler long ago and put duals on and IMO there was NO extra exhaust note:mad:

do any of these dash hawk monitors put a signature on the ECM? My dealer is very touchy on that kinda stuff. I removed the muffler long ago and put duals on and IMO there was NO extra exhaust note:mad:


The MSD DashHawk and Edge Insight are just glorified accurate gages the do not program anything.

As for the exhaust - it has been posted on here many times you only gain looks - all the restriction is in the CAT and DPF not the muffler.

;)

The MSD DashHawk and Edge Insight are just glorified accurate gages the do not program anything.

As for the exhaust - it has been posted on here many times you only gain looks - all the restriction is in the CAT and DPF not the muffler.

;)

Well most of, if not all statements on what is the main cause of restriction is thoughts or just believing. I know first hand the muffler is very restrictive that was the first item I removed,and it was the most noticable change/gain after removing it.
EGT`s, milage.
Just look at my garage pic`s at the muffler exhaust flow. With the dpf removed at a later date there was not much of a improvement in anything, and the cat still has a home. I still have the funnel looking tail pipe, polished,and it sounds nice with just a cat.

Well most of, if not all statements on what is the main cause of restriction is thoughts or just believing. I know first hand the muffler is very restrictive that was the first item I removed,and it was the most noticable change/gain after removing it.
EGT`s, milage.
Just look at my garage pic`s at the muffler exhaust flow. With the dpf removed at a later date there was not much of a improvement in anything, and the cat still has a home. I still have the funnel looking tail pipe, polished,and it sounds nice with just a cat.


I know you claim that :rolleyes: - if I believed a muffler delete would increase MPG or even just sound - I would be all over the DPF back Banks Monster exhaust. :cool:

It should not effect warranty at all since it is post DPF. The sound is very close to stock as the DOC/DPF drown out any and all engine noise.

......They are mostly cosmetic. According to Banks, their exit temps are cooler than all other exhaust manufacturers, but this means nothing for performance or sound.


I have read all the Banks info and viewed the videos - nowhere does it say their muffler delete pipe will increase MPG or sound.

:p:

Hmmm ... were there claims of increased MPG or sound?? ... :confuzeld: ... anywhere?
(neither of which interest me in the least)

However, I AM interested in, and DO see logic in claims that:
. . . restriction is reduced, and
. . . that REGENs are quicker,
. . . after the muffler is removed.

If you remove only the muffler and replace it with a section of ... pipe, that will
... cut the regen process down to about only 10 miles.
... there won`t be much more of exhaust noise.
... the egt`s will drop about 100 degrees during the regen process.

Hmmm ... were there claims of increased MPG or sound?? ... :confuzeld: ... anywhere?
(neither of which interest me in the least)

However, I AM interested in, and DO see logic in claims that:
. . . restriction is reduced, and
. . . that REGENs are quicker,
. . . after the muffler is removed.


What Banks does claim is a little cooler temps 6" from the tip and higher CFM than stock during regen. Banks does NOT claim quicker regens.

http://assets.bankspower.com/prod_inline_images/245/BanksCoolCuff_ad.pdf

A little cooler temps 6" from the tip and higher CFM are because of the Banks CoolCuff being a better venturi than the stock trumpet.

Regardless the largest restrictions are still there in the DOC and DPF.

And so what that the Banks better venturi, mixing in more CFM of outside air, makes the exhaust 6" from the tailpipe a little cooler during regen. Hot is hot.

What Banks does claim is a little cooler temps 6" from the tip and higher CFM than stock during regen. Banks does NOT claim quicker regens.

http://assets.bankspower.com/prod_inline_images/245/BanksCoolCuff_ad.pdf

A little cooler temps 6" from the tip and higher CFM are because of the Banks CoolCuff being a better venturi than the stock trumpet.

Regardless the largest restrictions are still there in the DOC and DPF.

And so what that the Banks better venturi, mixing in more CFM of outside air, makes the exhaust 6" from the tailpipe a little cooler during regen. Hot is hot.

Just came from the grocery store - flipped open a Diesel Power mag and there was the same Banks ad I linked above. Except it had an "INCREASED FULL EFFICIENCY" claim by the CFM chart now..... Guess I am sold!

:D

Some folks only believe "customer testamonials" while others believe only the vendor's "scientific" propaganda. Whatever turns yer crank, I guess. :boxing:

I'm interested because it just seems logical that the triple-reverse muffler would clearly restrict the DPF's clearing. As I've posted elsewhere, I never experienced any notable economy or performance advantage by dropping the DPF. If & when I decide to rehang it, it will be without muffler, maybe with that Banks pipe. Anyone looked up Banks' pricing??

Banks does have some well developed products. Not sure what vendors here have the DPF back pipe(s) - but several perhaps non-official sellers on eBay have them listed.

;)