two words.. DO IT!!!!

I just got my mini max and 5" stainless MBRP exhaust (w muffler) installed on sunday (not too much fun in the driveway) and it was SO worth it. I have not taken the truck off the STOCK tune yet, but it is twice as responsive as stock (the dead pedal is almost gone) the exhaust tone is to die for, and if you are so inclined to lay into it a bit, the turbo howl is second to none. The mileage has gone up from 13ish to 16ish same roads, same driving style, and I am regularly seeing 20+ unloaded on flat highway at 70, with no more regen Bu!!shit to reduce the mileage back down to 8. I loved the truck prior to the tuner, however now, it is hands down better than stock all around the board.. Warranty Shawarranty.. In the unlikely event I do have a $2k problem down the road that brings up warranty concerns, I will have likely saved it in fuel, let alone the smile that is on my face from ear to ear every time I get in it. This thing is AWESOME!! THANKS H&S!!

Your killing me.......

quick question,

does the tuner stay in the truck or do you remove it? I was wondering if the tuner actually "runs" the truck or it changes the tune and it is uploaded....

I was wondering about reliability thats all. I was wondering if I delete the emissions crap but I trade for another problem, relying on another electronic gizmo to run the truck....

Did you remove the cat also?

quick question,

does the tuner stay in the truck or do you remove it? I was wondering if the tuner actually "runs" the truck or it changes the tune and it is uploaded....

I was wondering about reliability thats all. I was wondering if I delete the emissions crap but I trade for another problem, relying on another electronic gizmo to run the truck....


I have not done it yet, but from what I understand, once the tune is uploaded into the vehicle, the minimax itself is nothing more than a set of gauges. you can leave it in, or remove it, your choice. However you would have to hook it back up to change power levels down the road

Did you remove the cat also?

Yes I did, I bought the MBRP kit which removes everything. Removing the cat was the only difficult thing of the whole install. The main exhaust came out with no issues, but removing the cat required supporting the tranny, and tilting the crossmember out of the way to remove/install the new pipe. However once you see the "diffuser" in the factory pipe between the cat and the urea injector, you'll be glad you replaced it, it is incredebly restrictive

What is the part number(s) for the MBRP kit. All I have been able to find is a filter-back kit.

same here, all I saw was the DPF or cat back system

What is the part number(s) for the MBRP kit. All I have been able to find is a filter-back kit.

Not sure of the part number, but call up alligator performance, and talk to colton, he sold me mine

two words.. DO IT!!!!

I just got my mini max and 5" stainless MBRP exhaust (w muffler) installed on sunday (not too much fun in the driveway) and it was SO worth it. I have not taken the truck off the STOCK tune yet, but it is twice as responsive as stock (the dead pedal is almost gone) the exhaust tone is to die for, and if you are so inclined to lay into it a bit, the turbo howl is second to none. The mileage has gone up from 13ish to 16ish same roads, same driving style, and I am regularly seeing 20+ unloaded on flat highway at 70, with no more regen Bu!!shit to reduce the mileage back down to 8. I loved the truck prior to the tuner, however now, it is hands down better than stock all around the board.. Warranty Shawarranty.. In the unlikely event I do have a $2k problem down the road that brings up warranty concerns, I will have likely saved it in fuel, let alone the smile that is on my face from ear to ear every time I get in it. This thing is AWESOME!! THANKS H&S!!

Any updates on the mileage ganis?

Any updates on the mileage ganis?

unloaded on flat highway at 70, I am regularly averaging over 20mpg. Since I have installed the tuner, I have driven just over 250 miles (mixed city highway), and I haven't exactly been a poster child for a responsible driver, and I still have well over half a tank of fuel left. The DIC is saying 17.8 average overall

I have been running H & S for about 2 weeks now and I love it. So far it looks like a true 1.5 or better then whatever you loose on a reburn. I usually lost about 1 full mile to the gallon so I am doing about 2.5 better right now. That was on the hot setting. I am running this tank on wild and will see. My truck is sitting at 9400 miles so it might still have some more mpg to come naturally anyways.
If you are trying to justify in fuel saving I don't know if its there or not. But like the first post says if you wanna grin from ear to ear then get the setup.

What is the cheapest and most realiable? I have a 2008 with 80K. Should I do it prior to Michigan Winter ? Any plus or minus?

Not sure of the part number, but call up alligator performance, and talk to colton, he sold me mine

Any idea if it is just an earlier kit designed for an LLY? Similar to what most have been using on their LMMs?

Well 99, I took your advice and did it. I hope I get it by the weekend. I'll be on pins and needles until it gets here.
I got tired of getting excited about great fuel mileage, then watching it fall during regens. Based on what I have seen from my truck in the short time I have had it and from what others have said on here, I am convinced that I can average 19-20 mpg in my daily driving. I have averaged 18.3 (non-towing) mpg in stock form so far with the regens.

I don't think you'll be dissappointed cow... Keep up posted!

+1

I picked up close to 3mpg.

This sounds awesome. Warranty is really painful to let go of though.

Even even if I put in the stock exhaust and return the truck to stock mode and removing the tuner beforetaking the truck in for warranty work, you're 100% screwed. Am I right ?

This sounds awesome. Warranty is really painful to let go of though.

Even even if I put in the stock exhaust and return the truck to stock mode and removing the tuner beforetaking the truck in for warranty work, you're 100% screwed. Am I right ?


You're not 100% screwed, it depends on your relationship with your dealer to a certain point. My dealer has always gone above and beyond for me, and they came right out and said that it "wouldn't be a problem".. But as we all know, until you really have an issue, you'll never know... But at the same time stop and think about what your "powertrain warranty" covers.. It doesn't cover the things that are going to break anyway.. It doesn't cover sensors, injectors, etc etc.. It covers the long block of the engine and the transmission/driveline.. Unless you spit a piston out the side of the block (which barely ever happens), it really isn't going to matter. And as I said, even IF you have a $2000 repair that you have to pay for (tranny) that would have been warrantied, the fuel savings alone will likely pay that, and then some nevermind the fact how much better the truck is with the tuner.

Yes I did, I bought the MBRP kit which removes everything. Removing the cat was the only difficult thing of the whole install. The main exhaust came out with no issues, but removing the cat required supporting the tranny, and tilting the crossmember out of the way to remove/install the new pipe. However once you see the "diffuser" in the factory pipe between the cat and the urea injector, you'll be glad you replaced it, it is incredebly restrictive

just sawzall that bitch out an you dont have to move anything else :D done it a few times now not to mention you shed alot weight taking the tank off the filler tubes off the heavy ass cat and dpf do the egr delete from alligator and you'll love it even more :cool:

also most local guys have had the dalers still do the warranty cause they no longer have to dick with the urea junk they all hate the only thing they wont fix is the trans everything else was still covered

Questions,

My dealer has already stated to me if "whatever I do causes the failure, it won't be covered" . I can deal with that if I delete. My question is two things: how loud is the complete exhaust in the cab? I do not want resonance in the cab!! And if I delete and leave it at STOCK tuning just to delete, will GM SEE I didnt "power up"?

Thx

Thy will see a change in the ecm regardless I believe they wont care you didn't turn it up or not they say you did something an try an use it as a excuse to get outta warranty stuff. As for the exhaust they sound like any Lmm duramax does IMO there a little quieter on the inside to me but again that's me

Questions,

My dealer has already stated to me if "whatever I do causes the failure, it won't be covered" . I can deal with that if I delete. My question is two things: how loud is the complete exhaust in the cab? I do not want resonance in the cab!! And if I delete and leave it at STOCK tuning just to delete, will GM SEE I didnt "power up"?

Thx

I hear ya, I know they will see the change, I just was wondering if they can see I DID not turn it up causing a tranny failure or what ever...


Just curious...

Yrs they can see it I would think

I was just hoping if they dont see a HOT tune, and stock numbers in place they would cut me some slack.

I love this truck but I have become consumed withe this REGEN issue... I am more and more thinking about deleting...

they will not know what tune you had it on (hot mild etc) though they WILL be able to see the peak torque/hp numbers produced, and if that number is much greater than 397/765 (or whatever the stock numbers are) then they'll know the truck has been modified.. That being said, I turned mine up to the middle setting today for the first time, and WOW.. I can't believe the difference! Incredible it is the same truck

How long should I wait to do it? I have had my truck a week. Dosen't even have 900 miles yet. Should I wait till it at least hits 10,000 to properly "brake in"

So if I purchase a new 2011 HD do I have to worry about the regen problems? Or is that issue taken care of IF they truck has had the recall?
Thanks! About to buy one this next week.

I wouldn't wait.. Personally I'd dump that DEF/SCR regen crap as soon as possible. The truck is SO much better without it!! I wouldn't turn the power up immediately on a N E W truck, but I would sure can the emissions ASAP.. Also, keep in mind that if you want stainless pipe (which I would highly recommend the 5" mbrp get it ordered NOW.. It took me over 3 months to get mine! But, it was well worth the wait

How is the sound in the cab. I do NOT WANT IT TO BE LOUD!!! I used to have a corsa exhaust on my corvette when I had it. It was nice and throaty outside but no resonance in the cab! Best of both worlds

it is louder than stock, but not obnoxious/resonating like many. I opted for the 5" with a muffler (I didn't want it too loud either), from what I have heard the 4" with a muffler is about as quiet as it gets! But as I said, I am very happy with the sound of mine, if you get into the go pedal it isn't silent, but it is quite tolerable! :)

I have the 4" full straight pipe delete. I was afraid it was going to be loud, but it isn't. The only complaints I have are:
1. The blowing sound at the tail pipe.
2. When I let off of the go pedal, there is a aound that is hard to describe. It sounds like the bay of a coon hound in the distance, or the wind howling through the trees. I am assuming it is the turbo spooling down quickly. I'm not sure what it is but it is annoying.

I have the 4" full straight pipe delete. I was afraid it was going to be loud, but it isn't. The only complaints I have are:
1. The blowing sound at the tail pipe.
2. When I let off of the go pedal, there is a aound that is hard to describe. It sounds like the bay of a coon hound in the distance, or the wind howling through the trees. I am assuming it is the turbo spooling down quickly. I'm not sure what it is but it is annoying.


your assumption is correct, the coon hound noise is the turbo spooling back when you get off the throttle, and the whistle at idle is the variable veins in the turbo doing their thing

ok I see some of you have the straight pipe..I really want to have a muffler.. I seriously want it as quiet as possible. I dont mind a little more rumble though...

what about a muffler? Cat? all that stuff??

I am starting to really consider this.

Is MBRP the best in stainless??

I wish I could find it now but a month or so back I downloaded the TSB from GM that REQUIRED TECH 2 Snapshots of both the ECM and TCM calibrations from the dealer before authorizing ANY warranty work. The calibration history has to match there database or your powertrain warranty would be cancelled on GM's network. No matter how cool your dealer is, there not going to work for free, and GM has taken it out of there hands. It's something I would look into long and hard.

I hear ya. That's my only worry. God forbid I blow an engine or something. I know I purchased a Denali but I do not have that kind of cash layin around to pay for an engine. I just wish they would figure out the stupid frequent regen issue.

I wish I could find it now but a month or so back I downloaded the TSB from GM that REQUIRED TECH 2 Snapshots of both the ECM and TCM calibrations from the dealer before authorizing ANY warranty work. The calibration history has to match there database or your powertrain warranty would be cancelled on GM's network. No matter how cool your dealer is, there not going to work for free, and GM has taken it out of there hands. It's something I would look into long and hard.

Like we don't this?

it's definately worth thinking about, but as with most things, the truck is only as fast as you make it. The detete definately isn't for everybody, but those of us willing to take a "risk" by doing it, I personally feel the reward far outweighs the risk, however that is just me!

I understand the advantages of doing the deletes, and have seriously thought about doing them myself. BUT, just so everyone that is thinking about this knows the laws, i thought id post this.

Its a 10,000 dollar fine if they catch you, plus they take your truck. If you pay the fine you get your truck back, if not, it gets auctioned off. This is a federal law, whether or not the state your in strictly enforces it is up to you to find out.

This is the end of the diesel muscle truck era

I understand the advantages of doing the deletes, and have seriously thought about doing them myself. BUT, just so everyone that is thinking about this knows the laws, i thought id post this.

Its a 10,000 dollar fine if they catch you, plus they take your truck. If you pay the fine you get your truck back, if not, it gets auctioned off. This is a federal law, whether or not the state your in strictly enforces it is up to you to find out.


I'll do some digging, that is NOT the law

ok I see some of you have the straight pipe..I really want to have a muffler.. I seriously want it as quiet as possible. I dont mind a little more rumble though...

what about a muffler? Cat? all that stuff??

I am starting to really consider this.

Is MBRP the best in stainless??


I opted for the 5" WITH a muffler in stainless. I chose the MBRP as it delete's the cat as well. Their kit replaces everything from the downpipe back (including the cat). It is louder than stock, but as far as in the truck, it is noticible, but not obnoxious by any means, no drone, just a bit more tone than stock

I understand the advantages of doing the deletes, and have seriously thought about doing them myself. BUT, just so everyone that is thinking about this knows the laws, i thought id post this.

Its a 10,000 dollar fine if they catch you, plus they take your truck. If you pay the fine you get your truck back, if not, it gets auctioned off. This is a federal law, whether or not the state your in strictly enforces it is up to you to find out.


:bs:i don't know where you are getting your info, but that is simply NOT the case. I'll even put $100 on it!!

http://www.propickupmag.com/about-dpf-delete/


Stop trying to scare people into not doing the delete!!! Looks to me like NO MORE THAN $2500, and that is a worst case scenerio. You'll save more than that in fuel over the life of your truck (which will NOT be auctioned off!!)

:bs:i don't know where you are getting your info, but that is simply NOT the case. I'll even put $100 on it!!

http://www.propickupmag.com/about-dpf-delete/


Stop trying to scare people into not doing the delete!!! Looks to me like NO MORE THAN $2500, and that is a worst case scenerio. You'll save more than that in fuel over the life of your truck (which will NOT be auctioned off!!)

May want to get info from a source better than a magazine

From EPA memorandum on the clean air act regarding federal emission equipment

"Section 203(a)(3) of the Clean Air Act provides:

"The following acts and the causing thereof are prohibited--
(3) for any person to remove or render inoperative any device
or element of design installed on or in a motor vehicle or
motor vehicle engine in compliance with regulations under this
title prior to its sale and delivery to the ultimate
purchaser, or for any manufacturer or dealer knowingly to
remove or render inoperative any such device or element of
design after such sale and delivery to the ultimate
purchaser."


Section 205 of the Act provides for a maximum civil penalty of
$10,000 for any person who violates Section 203(a)(3). "


Got anything else to add?

May want to get info from a source better than a magazine

From EPA memorandum on the clean air act regarding federal emission equipment

"Section 203(a)(3) of the Clean Air Act provides:

"The following acts and the causing thereof are prohibited--
(3) for any person to remove or render inoperative any device
or element of design installed on or in a motor vehicle or
motor vehicle engine in compliance with regulations under this
title prior to its sale and delivery to the ultimate
purchaser, or for any manufacturer or dealer knowingly to
remove or render inoperative any such device or element of
design after such sale and delivery to the ultimate
purchaser."


Section 205 of the Act provides for a maximum civil penalty of
$10,000 for any person who violates Section 203(a)(3). "


Got anything else to add?

nothing more than I was right!! MAXIMUM penalty of UP TO 10k (again, show me 1 person that had a 10k fine), and where is the part about them re-posessing the truck?

Im not sure how that proves youre right when you posted above "NO MORE THAN $2500". Last time i checked 10,000 is more than 2500.
Fines may not be more than 2500 right now, but they have the potential to go up to 10,000. The stricter these emission laws become, the more they will be enforced. No telling on how long that will be, its all a gamble.
I'm not trying to say you did anything wrong by taking the stuff off, I just want people reading this to realize what the consequences COULD be and then they can decide for themselves if its worth the risk.

for what its worth, im still heavily debating whether or not to do this.

who gives a shit about the law...if the government really wants to be an ass about the exhaust on my truck then hell...i got alot more for them to worry about than that...but i do understand where you are comming from just a little FYI you are giving people...but i did the delete on my LMM and i went from liking my truck to LOVING it...kind of waiting it out until i see what EFI live might have in store if they can get everything they need to tune the LML, and i know it might be another 6 to 8 months but it would be worth the wait if they happen to be able to do it...

If you read that clean air act correctly it states it is illegal for any person to remove PRIOR to sale or delivery.... Then it says for any MANUFACTURER or DEALER to remove after sale or delivery. It does not say the end user cannot remove it. Just like the tag on your mattress

I want to delete emissions crap bad. I did it on 2008 but i really like the warranty on this one. Ive only got 2400 miles......plus H&S is a bit more pricey than my Edge race....

To bad Edge stopped the "Race" tuning. They never even got a chance for us LML guys. Edge has always made some good, decent power.

To bad Edge stopped the "Race" tuning. They never even got a chance for us LML guys. Edge has always made some good, decent power.

^^^^:exactly:^^^^

I agree! I loved my Edge. I was going to go to EFI but traded in the truck for the '11. Got a great deal on it. I still wonder if anyone other than H&S is going to make a DPF delete product. Seems like H&S makes a great product, just pricey.

im going to hold off on the DPF delete until i know FOR SURE FOR SURE that EFi live is outa the question. but boy do i miss blowing smoke and roaring through the streets of Jennings,Louisiana lol

So, can the H&S tuner be left on stock but still do the DEF/DPF delete? Or does it have to be set on mild for any of the emission bypasses to be done?

So, can the H&S tuner be left on stock but still do the DEF/DPF delete? Or does it have to be set on mild for any of the emission bypasses to be done?

It can be left on stock power levels. I have had the delete now for a couple of weeks and I have not added any power.

It can be left on stock power levels. I have had the delete now for a couple of weeks and I have not added any power.

How do you like it?

I like it OK. I am glad I never have to worry about any headaches that might be associated with the emmissions crap they put on these things. I guess all I have to worry about is teh warranty! I am only seeing about a 1 (maybe 1.5) mpg gain in fuel economy though. That is disappointing after reading about folks gaining up to 3 mpg. I was actually hoping for 2. I do seem to be getting at least 1.5 mpg gain while towing so that is a good thing. I may try the higher levels eventually to see if that helps any more.

So, with the emmissions deleted, do they perform like the LBZ and LMM
models with a simular tune?

The new LML looks simular to the LBZ but with better fuel injection.

My last new 01 Reg Cab HD 6.0 is a great truck but would like to replace
it with an 11 or 12 Dmax. I may have waited too long and missed out
on the truly good performing ones.

I may buy one reguardless but I would like to know before
I let go of the 50k.

So does a person have to buy a full exhaust to delete the DPF? I see the 08-10's you can get just a delete pipe? Why not cut off the DPF,CAT,and muffler and replace with a piece of pipe?

im going to hold off on the DPF delete until i know FOR SURE FOR SURE that EFi live is outa the question. but boy do i miss blowing smoke and roaring through the streets of Jennings,Louisiana lol

Ah, Jennings. The best boudin around.

So, with the emmissions deleted, do they perform like the LBZ and LMM
models with a simular tune?
The new LML looks simular to the LBZ but with better fuel injection.

My last new 01 Reg Cab HD 6.0 is a great truck but would like to replace
it with an 11 or 12 Dmax. I may have waited too long and missed out
on the truly good performing ones.

I may buy one reguardless but I would like to know before
I let go of the 50k.

I am still running stock power levels so it does not feel quite as stout as my LBZ did with a 70 hp tune.

So does a person have to buy a full exhaust to delete the DPF? I see the 08-10's you can get just a delete pipe? Why not cut off the DPF,CAT,and muffler and replace with a piece of pipe?

I bought a programmer/cat/dpf delete package. It was not a full exhaust, just replacement pipes for teh cat and dpf.

I didn't see that on H&S's website :confused:. Where'd you get the delete pipe?

I bought a programmer/cat/dpf delete package.
It was not a full exhaust, just replacement pipes for teh cat and dpf.

I like it OK. I am glad I never have to worry about any headaches that might be associated with the emmissions crap they put on these things. I guess all I have to worry about is teh warranty! I am only seeing about a 1 (maybe 1.5) mpg gain in fuel economy though. That is disappointing after reading about folks gaining up to 3 mpg. I was actually hoping for 2. I do seem to be getting at least 1.5 mpg gain while towing so that is a good thing. I may try the higher levels eventually to see if that helps any more.

Most likely your mileage will increase running a hotter tuner (more timing).

I didn't see that on H&S's website :confused:. Where'd you get the delete pipe?

Thoroughbred Diesel, they are asupporting vendor of this site. Very good to deal with.

So does a person have to buy a full exhaust to delete the DPF? I see the 08-10's you can get just a delete pipe? Why not cut off the DPF,CAT,and muffler and replace with a piece of pipe?


you can cut off the dpf/cat/muffler, but if you ever go back to stock for any reason you will have to reflange it all up. i was going to just cut off my dpf on my 08 until i saw the price of one :eek:...but like others mentioned best to buy all the deletes that way it looks better and less crap. just my .02$

My D-Max has 427K on it....Yes 427. So obviesly Im not concerned about warantee issues. Is there anything else to worry about when removing the DPF?? I know it illegal, specialy in California lol. But what should I be concerned about?

Any info is grately appreciated.

Here is a picture of the urea injection. My opinion which is just an opinion I don't see how much performance can be established if you delete the dpf but leave this monster air blocker urea injection piece. I could be wrong but those flanges that make the air spin to absorb the urea sure block alot of breathing room.

2001 gmc can you DEF delete with what kind of programer and do you need to remove exhault filter.do you get better mpg?can you stall cat back with filter delete.did you guy remove low hanging def tank?

2001 gmc can you DEF delete with what kind of programer and do you need to remove exhault filter.do you get better mpg?can you stall cat back with filter delete.did you guy remove low hanging def tank?

Did you mean 2010?? I had an early 2002, built October 2001, and it did not have any of the pollution junk on it....no EGR or DPF / DEF. Tuning my 2002 was very easy...made a huge difference in power....but beware you'll need to upgrade the Allison...if that's what you have.

Good Luck,

Wayne

Guess maybe you were posting the question to someone in particular. The tuners, at least H&S...which I'm familiar with, has tuning for DPF on or DPF delete. If you tune for DPF delete.....you better get that unit off of your truck ( I think the instructions say to not drive it like this for more than 25 miles)....I'm sure it would plug up the unit fairly quickly. I'm sure removing all of that exhaust flow restriction will help the engine in all respects including fuel economy. I'm seeing modest increases with in town driving....something on the order of 1 mpg...haven't taken a decent road trip yet to know what it does on the freeway. I could probably realize better fuel economy in town....but releasing extra ponies does something to one's right foot :D

Good Luck,

Wayne