We have a 05 LLY with MBRP 4" down pipe back with St 2 AFe and Predator. But apparently this latest Max is harder to modify as far as exhaust with all they have done to it now. I am sure there probaly aren't even programmers availiable yet but I see some have the 5" exhaust and are throwing codes! Mainly because they took the Dp off. So what do you have to do just put a muffler back system on too be on the safe side. On the 05 there were no sensors or nothing just unbolted everything from turbo back and put exhaust on. Not sure why they keep having to make things harder to tinker with! :( Oh and what is up with this ugly exhaust tip???

the exhaust tip is so that the exhaust is cooled more before it leaves the tip due to higher temps with the DPF

well that makes sense! thanks

Yes there are mods, PPE has a programmer out with four power levels, all in real time unlike the Edge products, it is plugged into the OBD II port under the dash, features tranny reset fast learn mode, diag scanning and clearence of DTC's also set tire size and speed limiter to name some of the functions, best and safest chip out, 4 levels , 40 hp 90hp 160hp 220hp and 260hp hot unlock is an additional 300 bucks *hp reflected and the crank* , also recommended that you do an egr block off plate, 12 bucks extremely important as it stops eg from being recirculated into the intake, plan on spending around a thousand bucks if you do the hot unlock, exhaust will be out at the end of the month elem dpf need anything let me know My b/f is a engineer over there, ps my truck is a test truck so ne questions let me know and by the way the base HP On the dyno of the LMM is 310 RWHP if you want the RWHP for the chip subtract around 25 percent as my truck WITHOUT intake or EGR plate on the dyno was roughly 430+ or so RWHP on level 4 Hope I was some help

Are you saying blocking the egr might raise hp also? I dont know if modifying the air box is good Idea? I know some people have did it and no problems but I just put a high flow filter in and my mASS Airflow sesnor kept sending codes setting off my engine light until I finally had to take it out? Wondering if moding the air box will eventually set off the sensor also?



Yes there are mods, PPE has a programmer out with four power levels, all in real time unlike the Edge products, it is plugged into the OBD II port under the dash, features tranny reset fast learn mode, diag scanning and clearence of DTC's also set tire size and speed limiter to name some of the functions, best and safest chip out, 4 levels , 40 hp 90hp 160hp 220hp and 260hp hot unlock is an additional 300 bucks *hp reflected and the crank* , also recommended that you do an egr block off plate, 12 bucks extremely important as it stops eg from being recirculated into the intake, plan on spending around a thousand bucks if you do the hot unlock, exhaust will be out at the end of the month elem dpf need anything let me know My b/f is a engineer over there, ps my truck is a test truck so ne questions let me know and by the way the base HP On the dyno of the LMM is 310 RWHP if you want the RWHP for the chip subtract around 25 percent as my truck WITHOUT intake or EGR plate on the dyno was roughly 430+ or so RWHP on level 4 Hope I was some help

Are you saying blocking the egr might raise hp also? I dont know if modifying the air box is good Idea? I know some people have did it and no problems but I just put a high flow filter in and my mASS Airflow sesnor kept sending codes setting off my engine light until I finally had to take it out? Wondering if moding the air box will eventually set off the sensor also?

As I recall, the high flow filter you used was cotton/oil and got oil on your mass airflow sensor, hence the codes. Others have had the same problem and went back to OEM / paper filter to address the issue.

Are you saying blocking the egr might raise hp also? I dont know if modifying the air box is good Idea? I know some people have did it and no problems but I just put a high flow filter in and my mASS Airflow sesnor kept sending codes setting off my engine light until I finally had to take it out? Wondering if moding the air box will eventually set off the sensor also?

If u choose a cold-air system, make sure its an oil free one. I believe AFE has one and Volant and AEM are about to come out with one.

Yes there are mods, PPE has a programmer out with four power levels, all in real time unlike the Edge products, it is plugged into the OBD II port under the dash, features tranny reset fast learn mode, diag scanning and clearence of DTC's also set tire size and speed limiter to name some of the functions, best and safest chip out, 4 levels , 40 hp 90hp 160hp 220hp and 260hp hot unlock is an additional 300 bucks *hp reflected and the crank* , also recommended that you do an egr block off plate, 12 bucks extremely important as it stops eg from being recirculated into the intake, plan on spending around a thousand bucks if you do the hot unlock, exhaust will be out at the end of the month elem dpf need anything let me know My b/f is a engineer over there, ps my truck is a test truck so ne questions let me know and by the way the base HP On the dyno of the LMM is 310 RWHP if you want the RWHP for the chip subtract around 25 percent as my truck WITHOUT intake or EGR plate on the dyno was roughly 430+ or so RWHP on level 4 Hope I was some help


am i reading this right? i can't tell if he means ppe is going to have "the fix" for taking off the dpf and not setting codes or if he means they are comming out with an exhaust for the new lmm. can anybody shed some more light on this?

PPE is coming out with a complete exhaust that is dtc free, also modifying the stock airbox will not set off ne codes, and will flow as much air as any intake on the market, tested and true, and yes the egr plate will increase hp in a minimal amount due to the elimination of Hot eg being recirculated into the intake, plus it eliminates sludge and eg soot building up inside the intake, if you have ever seen one after 10000 miles or so without the plate it would make you sick.

Oh and the exhaust that will be available will not use the existing dpf

Sorry if I gave the wrong info, I knew the oiled air filter was part of my problem but I also thought that pulling much more air would confuse the air flow sensor also? But reading some post it seems not to be an issue for the people that did the air box mod. I was also told by the people at PPE that there should be no reason to mod your air box unless your engine is pushing 650 hp or better. Standard box should be good to 600 hp or so. When the side was cut out of my 01 box it seemed that the filter would got to sh%t soon after it rained because it let the moisture get pulled into it? Wouldnt that be the case by moding the new air box?


2007.5 lmm

Where can I find more info. on modifing the stk airbox? You said you got 430+ RWHP with the tuner was the the 220 selection or the 160 HP selection and also what was your TQ to the rear when you got 430 HP?
Anyone know if there will be dual stacks availiable for the LMM?

Sorry if I gave the wrong info, I knew the oiled air filter was part of my problem but I also thought that pulling much more air would confuse the air flow sensor also? But reading some post it seems not to be an issue for the people that did the air box mod. I was also told by the people at PPE that there should be no reason to mod your air box unless your engine is pushing 650 hp or better. Standard box should be good to 600 hp or so. When the side was cut out of my 01 box it seemed that the filter would got to sh%t soon after it rained because it let the moisture get pulled into it? Wouldnt that be the case by moding the new air box?


2007.5 lmm

I agree, unless your tuning application is extreme the stock airbox and filter should be up to the job.

lol, if you have seen the inerts of a stock lmm intake you would know how restrictive it is, if you want every last bit of horsepower and or you are programming the motor for more horsepower, such as changing timing, injector pulse, boost etc, you want to let the motor breathe, the stock airbox is highly restrictive, yes it is fine if you want to run it, no it isent the best thing for it, the stock box will starve it for air and the comp will substitute for that, OPEN UP THE STOCK BOX TRUST ME, I am sure you will see a gain of about 20+ HP or so and it take all of 15 min with a cut-off wheel and some sand paper, just take off the box cut the stationary inlet fan looking blades then sand down the rough spots and bingo your done, directons are somewhere on the internet, if you take the box off you can look at it and see, part of the forward box and rubber seal needs to be cut as well

LMMOWNER You said you got 430+ RWHP with the tuner was the the 220 selection or the 160 HP selection and also what was your TQ to the rear when you got 430 HP?

LMMOWNER You said you got 430+ RWHP with the tuner was the the 220 selection or the 160 HP selection and also what was your TQ to the rear when you got 430 HP?

the 430HP was on the 225 level 4 without exhaust or intake or EGR not level 5 260, and the tq i believe was around 900 + or so I need to find my print out just a guess

So to get level 5 260 HP its a 300 buck add on to the controller? Those are pretty good for stk intake and stk exhaust imagine what you could have doen with modded exh and intake. I would say for just a tune that is better then any previous MAX #'s.. When is PPE suppost to release the exhaust and what size are they gonna have a 5" Turbo back?? ALso are tuners availiable now. I think they are called the Accelerator tuners right?

RUQ you are right on, intake is a big plus and exhaust on my truck from turbo back no DPF gave me 20 HP RWHP check engine light is on but it will be off in no more then 30 days, my exhaust/software guy is THHHISSS CLOSE to basically reverse engineering the damn thing so I would venture to say that that my RWHP with intake exhaust egr and tunner on level 5 will be around 490 to 500 depending I will kepp you updates though

Yeah they have been for about 5 months, yeah excellerator, i think your lookin for the level 5 unlock about 917.00 bucks talk to doug tell them jason told you to call the egr plate is 12 bucks and exhaust through redline which is a bolt on and bolt off system turbo back like the stock setup is 4 1/2 inch with a 5 inch exit is 800 bucks installed, ps with redlines system there is no cutting the old system which makes if neccessary putting the old system with the dpf a breeze un bolt and bolt back on and your done

Plus the dtc that is on when exhaust is changed check engine light etc, is not a bad thing everyone, the code sent shuts off regeneration, which in turn means 100 to 300 degree lower egt's plus to pesky high idle at a stop light when regen occurs , if anyone is running a pyro look at your pyro when idle is up 10 bucks says your eg temps go from a normal 800 to around 1200!!!!!!!!! welcome to the new word of diesel emissions and gm regeneration technology

lol, if you have seen the inerts of a stock lmm intake you would know how restrictive it is, if you want every last bit of horsepower and or you are programming the motor for more horsepower, such as changing timing, injector pulse, boost etc, you want to let the motor breathe, the stock airbox is highly restrictive, yes it is fine if you want to run it, no it isent the best thing for it, the stock box will starve it for air and the comp will substitute for that, OPEN UP THE STOCK BOX TRUST ME, I am sure you will see a gain of about 20+ HP or so and it take all of 15 min with a cut-off wheel and some sand paper, just take off the box cut the stationary inlet fan looking blades then sand down the rough spots and bingo your done, directons are somewhere on the internet, if you take the box off you can look at it and see, part of the forward box and rubber seal needs to be cut as well

I agree, stock air hat is restrictive when you're trying to squeeze out every last bit of juice. Most folks seem to be having good luck with stock parts and a tuner, though. Being able to bump up horsepower 40% before you have to start worrying about the stock intake and exhaust is nothing to sneeze at...

It's all in what you want I guess. Good times :D

your right on John the technology of diesels now is amazing, who would have guessed that you could spend a thousand bucks or so for a few hundred extra horsepower and run stock trucks against vetts z28's and my favorite rice rockets excuse my racist comment

nothing better then launching from a light against a 2 door honda or integra and leaving them like they were still and looking at there face as they pull back up and realize you have stock exhaust and tires and its as quiet as a baby muhahahahha

I had that last week, those silly Integras never see it coming, then they always have to do the flyby after you've already smoked them and that gross fart can noise goes shooting past you.

LMMOWNER- So what exactly do you have done to your truck and whats your fuel mileage like?

nothing better then launching from a light against a 2 door honda or integra and leaving them like they were still and looking at there face as they pull back up and realize you have stock exhaust and tires and its as quiet as a baby muhahahahha

I'm with you, big fan of sleepers and 'Q' ships myself :secret:

The one I like is the success story from Tony Martino on the EFILive web site... 498 HP and 1010 Torque on an "otherwise stock" LB7? Outstanding, and would definitely wake you up in the morning :Whoa:

Looking forward to what all the vendors can do with an LMM. CarsDirect is quoting 2500HDs in SLT trim at around $44k right now if you can keep out of the factory Entertainment and Sunroof etc. "Cowboy Cadillac" options. That's with the Z71 setup, too.

"Zoom zoom" indeed... :evillol:

JZS I have the PPE tunner with the level 5 hot unlock which is the 260 hp upgrade I have an egr plate, modified airbox and a turbo back exhaust I am right at about 490 RWHP or so if my numbers are right i am seeing when i keep my foot out of it about 18mpg on the streets with about 6000 mile and about 20 or so on the freeway those are based off of filling up and mileage not the dic on the dash and that is in level 4 of 5 at 220HP level