Ok running 90 tune on Quad.
Driving from Phoneix to prescott. Got almost to the top of the hill climb and check engine light came on. I kept driving and a mile later . Clean DPF then went into Limp.
I got off the ramp and set programmer to stock. It ran fine and had power with engine light on and clean exaust on screen.
Got another 20 mile and the check engine light on and the screen had turned off clean DPF.
I assume it then Regened because fuel miles went from 14.4 to 7 miles per gallon. Engine light still on.

So stoped at my dealer. The hooked up the scan and looked it up.
Codes P2459 and P244B.
Bulletins came up with Change to new part number for air filter and the other bullitin was to reflash new dowload which lowers the ammount of times it checks if it need a regen.

I know I know

Tear it off and download new Quad with DPF Delete and get exhaust.

This guy keeps telling me its because my 37 inch tires are telling it to regen more.

HMM


Talking to service rep at dealer about my 7 year waranty and ripping off the exhaust.

so where is the question?

sharp looking truck by the way

Anyone else with this problem?

When I talked to quad about buying their unit, they had just come out with it. They said, however, to run the Econ, +50 or +70 with the DPF. Any more would PLUG the DPF. I don't see this being a tire issue, I see it being that the +90 starts putting out enough smoke that a regen can't clear it fast enough. You pulling a hill, probably just before a regen was going to happen anyway, just plugged it even more.

Oh, by the way, my turbo-back just got delivered a few minutes ago. :) Neener neener. :D

my turbo back and Quad should be here late this week or early next week. I keep a detailed mileage log so I hope to see some gains! Anyone know what the power setting is for economy? That's what I plan to run.

When I talked to quad about buying their unit, they had just come out with it. They said, however, to run the Econ, +50 or +70 with the DPF. Any more would PLUG the DPF. I don't see this being a tire issue, I see it being that the +90 starts putting out enough smoke that a regen can't clear it fast enough. You pulling a hill, probably just before a regen was going to happen anyway, just plugged it even more.

I think the issue maybe is that with the bigger tires, you need morre throttle, which equals more fuel which equals more regens

Methinks...

my turbo back and Quad should be here late this week or early next week. I keep a detailed mileage log so I hope to see some gains! Anyone know what the power setting is for economy? That's what I plan to run.

Believe it or not, a lot of people here are saying the 110 tune is the most economical. I spoke with Justin at Quadzilla today, and he confirmed that.

The trick is controlling your right foot...

I think the issue maybe is that with the bigger tires, you need morre throttle, which equals more fuel which equals more regens

Methinks...

Good call. That is probably right on track.

The ECONOMY setting is the ECONOMY setting. It is the first one in the lineup. Then +50, +70, +90, +110.

UPS came today! Wow, Nate at performance truck products hooked it up and FAST! I ordered it tuesday morning! Guess I got some parts to install, WoooOOOT

Were do I get a price from Nate?


So lets say my truck needs to go in for motor work . I have the quad DPF turned off and turbo back exhaust.

I know I should take the Quad off before going into the dealer. But wont the truck have a check engine light on when I get to the dealer? Or dose the quad leave the DPf off even if I return to stock tune.

Just another thought, since the stock DPF unit has a bolt on flange at either end can I run a straight pipe with flanges? Quad DPF turned off and run it.

When I go to dealer bolt up the DPF take off the quad and done.

Just sitting on the side of the road today in Limp mode sucked. I just want the DPF gone after it sucked the milege out of my truck.

Funny thing just sitting on the side of the road. Screen says to read owners manual. I read it and it tells me to drive it at 30 MPH to get it to Regen. Im thinking so now I will go 30 MPH in Limp mode in traffic doing 80. Thats really safe.

Sorry for the rant. This just pisses me off. Now Ill have a 40 ft fith on the back going to Glamis with my family knowing we will be on the side of the road every tank full with me disconnecting the fith and driving around in circles at 30 mph.

I should just stay home and go play with myself in the corner. Sounds like more fun.
Damn Im on a Rant again. Sorry

Just want to keep my Waranty.

Just another thought, since the stock DPF unit has a bolt on flange at either end can I run a straight pipe with flanges? Quad DPF turned off and run it.

When I go to dealer bolt up the DPF take off the quad and done.

Now Ill have a 40 ft fith on the back going to Glamis with my family knowing we will be on the side of the road every tank full with me disconnecting the fith and driving around in circles at 30 mph.

I should just stay home and go play with myself in the corner. Sounds like more fun.
Damn Im on a Rant again. Sorry

Just want to keep my Waranty.

Well, the "cat" DOC is ahead of the first flange in the system. That is why we have all gone with turbo-back systems. Easier anyway, as the downpipe connects with a V-band clamp, which is actually easier than the four-bolt flange.

So, yes, you could try to find a THREE-bolt flange like the one at the back of the DPF and then have a pipe made with a flange for the V-band. But, if you just order a turbo back kit from one of the vendors (like Nate / Performance Truck) then you have it all.

A 40-foot toy hauler is way over what your truck is rated to pull anyway, so warranty concerns are nil.

Get rid of the DPF, no more codes. Make sure you save eveything though in case you need to make a dealer visit.

Do you want 4" or 5" exhaust?

i wouldn't take it in without having the dpf...just asking for problems in my opinion

difference in performance or is it just looks?

if you want to keep your warranty, keep it stock. They are getting better and better at tracking programmers, and the presence of a new-ish looking DPF on an otherwise well-used exhaust system could raise a red flag. If you're gonna mod stuff, they are gonna void your warranty, IMO.

Just blame it on Prescott :)

Don't you have smog checks down there in Maricopa County?


Ryan

i wouldn't take it in without having the dpf...just asking for problems in my opinion
And when you go back to the dealership, put on your stock wheels/tires, take the lift/level kit off, re-align it, put the stock airfilter back together, pull out the egt and boost gauge.

CAN they deny warranty? Yes. Would it be wise on their part? No. Will they? Probably not.

My vehicles are all customized from front to rear and I have never been denied for warranty work. Case-in-point, the rattling steering shafts that plaque these new trucks. My wife's '04 Yukon has been in twice for it. It has a 3/4 drop and 22s. Never said a word.

Just blame it on Prescott :)

Don't you have smog checks down there in Maricopa County?


Ryan

I live up here (Prescott)

Lets say I put on an aftermarket exhaust and DPF delete program on my quad.

When I remove the quad will the DPF system turn back on?

I posted on another post about Edge. So with Edge and Bully dog they want us to run the DPF. Are they stuck with nothing over 50 hp. Cant tell me they are running 115 hp tune and not having problems.

I live up here (Prescott)


Oh, well nevermind then. In that case I would put a turbo-back on that thing.
I would assume you get your service work done at Lamb Chevrolet, go ask the service foreman, Vance. what his opinion would be on that. I would not see it being a problem. They have always been really laid back about things at Lamb.

I will be doing a turbo-back and quad here in the next month or so.

I will keep an eye out for you.:D

If what you are asking is "return to stock", yes,dpf is on..

Lets say I put on an aftermarket exhaust and DPF delete program on my quad.

When I remove the quad will the DPF system turn back on?



If by remove the Quad you mean reinstall the stock tune, then yes, you would be back to normal DPF operation.

Bear in mind that "removing the Quad" is somewhat of a misnomer... You do not actually "install the Quad". It is a tool, which you use to reprogram your ECM to one of Quad's 5 re-written engine strategies. Once you reprogram (5 - 6 minutes), you remove your Quad and it sits in your toolbox until the next time you need it.

Of course, if you want, you can drive with the Quad installed and use it as a live ECM parameter monitor, but I would guess that's not the norm for most people...

I'm curious for those of you running quad with 110...have you hurt your tranny and are you still running a stock tranny...thanks

I'm curious for those of you running quad with 110...have you hurt your tranny and are you still running a stock tranny...thanks

I just installed the 110 tune yesterday, and the only reason I did is that many people on this board as well as Justin in tech support at Quadzilla have said that the best fuel economy performance can actually be obtained by running the 110. The trick is keeping your foot out of it. :D

So as far as a trans problem, I would not expect one on my truck because I baby the thing for MPG's. That having been said, the low end performance at 110 is simply amazing. I accelerated with LESS than 1/2 throttle to pass a car, and the way the engine responded actually startled me, plus I was looking in the mirror, and it was WAY diesel smoke.

Yee-Haaa

I haven't full-throttled mine at +90, but I have needed to either. It runs crazy-good and that still with the DPF!

If +110 defuels at shift time like the +90 does, the tranny shouldn't have too much trouble with it.

I plan on adding a TransGo Jr. and the 3rd clutch cooler lines from Mike L.

Oh, well nevermind then. In that case I would put a turbo-back on that thing.
I would assume you get your service work done at Lamb Chevrolet, go ask the service foreman, Vance. what his opinion would be on that. I would not see it being a problem. They have always been really laid back about things at Lamb.

I will be doing a turbo-back and quad here in the next month or so.

I will keep an eye out for you.:D

I think I saw you Today but a white truck in Prescott is the norm. I have 5 white veichles. Im sick of white.Had to do something different.

I talked to Vance. He didnt say do it. But he said if there is ever a motor failer at this point of the Lmm being so new. Gm will investigate.

I think in another year or so it will be the norm. They get a little weired because this is so new. Dealer never said nothin about converter removal in the past.

Today I just turned on the fifty tune and reset my codes. Went to phoenix tonight to see my daughter at Phoenix Children Hospital. It ran fine.

If I know me. This Exhaust wont be on here much longer. Every toy I have is modded some how.

My next question is if I bring my truck in with the exhaust and tune lets say. Now if they have to reflash something dose this mess up the Quad?

If I take the Quad off and leave the exhaust with no DPF wont there be a check engine light on?

Just looking at the DPF under your truck you can see the 2 probes in the exhaust. Im really surprised someone has not come up with something besides the programmers to trick the computer into thinking its there. Like plug in a litte black box in its place. I think the big problem is if the computer always says both probes are running lets say 2lbs of pressure. And it never gets clogged then the computer is pissed it is not regening and this sets off another code.So It must run on how many times it Regens in a certain time frame also.
Just a thought

I'm curious for those of you running quad with 110...have you hurt your tranny and are you still running a stock tranny...thanks
Been running mine on the 110 hp setting for a while now and i drive like I'm always in a race. Hammer down, balls to the wall.:cool: Anyways I just turned mine back down because i felt like the torque converter was doing funny things and was not going to last on this setting with my driving style. So until I'm ready to do the tranny mods I'll keep it turned down some.:(

I do have the trans go jr kit installed by the way.

Ironman

Did you regear? I havent and still think it pulls good with 37 inch tires.

Also is your speedo off pretty bad? I have mine set at 35 inch tires so the ABS light stays off. Im only off maybe 3 mph.

time for some guages guys ) if you get the insight guage you can see if there iss tcc slip going on a good tool to use whn your trans isnt built also you can check it with a tec2 if you have acess to one

time for some guages guys ) if you get the insight guage you can see if there iss tcc slip going on a good tool to use whn your trans isnt built also you can check it with a tec2 if you have acess to one

Exactly right. Turned mine up to 90 from 70. Seeing a lot more slip from the TC. Definitley feel it when I hammer down. Trans feels like it is dragging through the gears. TC is a lot slower to lock. I am going to reset the trans again (reset it for the 70) and see if that helps if not going to turn it back down. There is quite a difference from the 70 to 90. Anyone else see this?:(

Ironman

Did you regear? I havent and still think it pulls good with 37 inch tires.

Also is your speedo off pretty bad? I have mine set at 35 inch tires so the ABS light stays off. Im only off maybe 3 mph.
No I did not regear. I always have in the past and just found it wasn't worth it unless you tow. Never seemed to make much difference in MPG and the power feels fine. I have mine set at 35.25 to keep the ABS shit happy. It's off by 8-9 percent.

I have noticed the tranny "slip" when you're all out on 90 and 110...... Other than that, this truck hauls a@$ now! If you stay out of full throttle, seems to shift out normally.

i wouldn't take it in without having the dpf...just asking for problems in my opinion


So you are out of town with the family and you go into limp mode. Now you have to go to the dealer. Do we drive around with the old exhaust and DPF in the back of our trucks incase we have to bolt it back in place before going??

looks like play pay or wrench

looks like play pay or wrench

Exactly.

looks like play pay or wrench

Yes, but if you are traveling, as I often do, might not be a bad idea to keep the Stealth in the truck. Just in case you need a quick flash from 110, oh, down to maybe econ... You know, right before you call the dealer...;)

Yes, but if you are traveling, as I often do, might not be a bad idea to keep the Stealth in the truck. Just in case you need a quick flash from 110, oh, down to maybe econ... You know, right before you call the dealer...;)
Ya but its still there. Just tell them your not useing the tune just speedo recal ,Dpf delete.

Ya but its still there. Just tell them your not useing the tune just speedo recal ,Dpf delete.

That's a good idea, too