Just curious since the market is becoming flooded with new products, who do you guys think offers the best programmers and/or perfomance packages for the Duramax motor?

Do you know if you have an LB7 or an LLY?


If it is 03 or older you have an LB7. If it is an 04 you will have to check the 8th digit of the serial #. If it is a 1 it is an LB7 if it is a 2 it's an LLY.

Depends on what you want to do. The juice attitude combo is a very good bargan for the guages and all the nifty features and protection built in and it is one of the better power adders. Probably the best bang for the buck IMO. Good company to deal with also!


Edit: oh yeah.....and what he saidhttp://www.dieselplace.com/forum/smileys/Embarrased.gifEdited by: ratlover

What Ratlover said. Edge Juice/attitude combo is IMO the best option available. Let me know if I can help.

Juice is good. Look into the attitude controlers and doing the install of the pyro for the customers too IMO and stick the attitude in either an ats mount or better yet Trippn's mount when he gets it done.


Juice especially if kept on the 90hp level is about as safe as you can get IMO.


Dont forget the exhaust either and point them herehttp://www.dieselplace.com/forum/smileys/Approve.gif


EDIT: if you are thinking of doing gauge installs.....check out this here for a realy slick factory look http://dieselplace.com/forum/forum_posts.asp?TID=10785&PN=1Edited by: ratlover

Thanks for the info Ratlover. Looks like we are headed the right direction. I will definitely be sure to point our future customers to this place, so far I am impressed.


As far as exhaust systems go, what are your recommendations? Just go with the standard companies or are has someone stepped forward and built something expressly for the Duramax?

standard companies on the exhaust kits..Banks and the like are always good choices

There are a TON of different makers of exhaust out there. Everything from cheap systems to pretty pricey stuff. Biggest thing with exhaust is that it drops EGT's. All the systems are pretty close to the same drop or should be. Biggest thing is sound preference. Everything sounds difernt and everybody has diffenrt likes and dislikes.


It would be really cool for a customer to hear a couple different exhusts and then decide whitch one they like the besthttp://www.dieselplace.com/forum/smileys/Cool.gif


LB7's dont mind having the cat removed if it was there to begin with. Some LLY's seem to get pissed and set codes if the cat is removed but cat back systems cause 0 reports of issues IIRC??? The LLY boys I'm sure will step in though with thier thoughts. It seems hit or miss with the LLY's

Does the LB7 have a cat. I didn't see it on my truck and I figured there had to be one on it for emissions. Then someone told me it was behind the motor up by the turbo. If so what can be done to get rid of the extra drag? or would it even help the much with performance or EGT's?

some 03's had em depending were you live. if you cant see it under there then you aint got one. if you have one yank ithttp://www.dieselplace.com/forum/smileys/Evil Smile.gif

I smell someone looking for info...http://dieselplace.com/forum/smileys/Evil%20Smile.gif

MBRP CAT BACK LLY OR DOWN PIPE BACK LB7 COOL DUALS OR SINGLE PIPE 309 STAINLESS OUR 409 STAINLESS MBRP VENDOR HERE I HAVE INSTALLED 4 SETS http://www.dieselplace.com/forum/smileys/Clap.gif Edited by: hdpoul

MBRP CAT BACK LLY OUR DOWN PIPE BACK LB7 COOL DUALS OUR SINGLE PIPE 309 STAINLESS OUR 409 STAINLESS MBRP VENDOR HERE I HAVE INSTALLED 4 SETS http://www.dieselplace.com/forum/smileys/Clap.gif





HUH??????

I think he meant to say OR and not OUR.....

http://www.dieselplace.com/forum/smileys/Question.gifLooking for intel guys. My first experience owning a diesel truck so if the questions sound rookie, they are! First, the air intake on the LLY is huge compared to my gassers. I ordered a uni-foam filter from JK to increase air flow, should be here today. All fluids (oil/tranny/diff) are synthetic. The exhaust appears to be 3.5" most, if not all, from the engine to muffler. It appears that several of the issues with the former LBY were addressed in the LLY. I'm not one to tinker too much with an expensive vehicle while under warranty, but I do tow heavy and would like additional hp/tq when towing. The juice/attitude has several features I like, though I would prefer something that can be controlled from inside the cab (Quad?) and very easily disconnected if I have to go to the stealership for warranty work. Also, is the stock exhaust sufficient to handle the tow mode settings (EGT's) on most programmers? http://www.dieselplace.com/forum/smileys/Embarrased.gif JJ

I smell someone looking for info...http://dieselplace.com/forum/smileys/Evil%20Smile.gif





That's how "experts" are born...

I smell someone looking for info...http://dieselplace.com/forum/smileys/Evil%20Smile.gif





That's how "experts" are born...





I know that but you missed another post that was going on.. Was deleted by mods... No need to rehash..

On the lower settings your egts arent going to be too bad, unless you are towing really heavy and pulling on grades. It is always good to get gauges first.

Well as mentioned above, some of the LLY's just don't like having the CAT removed and set "Insufficient EGR flow" codes in the computer. I've tried to read all of the posts from folks who've had the problem, as well as those who've removed the CAT with no problems. There doesn't seem to be anything I've seen that will tell if you'll be able to get away with it or not...http://www.dieselplace.com/forum/smileys/Disapprove.gif


As far as installing a foam filter, you might want to read the thread on the air filter tests conducted for a member here by a reputable testing facility, before you replace the OEM filter:


http://dieselplace.com/forum/forum_posts.asp?TID=5657&KW=Air+filter+tests


I think you'll find it necessary to do something with your exhaust if you put any kind of programmer/module on your truck in order to drop some of the EGT temps you'll see. I put a CAT back system on mine mostly because we have diesel emission testing here, and got some drop in those temps.


The rear differentials on the trucks, the G80's, come with synthetic fluid, the front differentials come with dino as well as the engine. Most here are just using synthetic in both differentials, and quite a few are converting to synthetics in the engine. If or when, you should convert to synthetics in the engine is a point of discussion around here which comes down to personal choice based on your own research of the subject. IMO, there's no question synthetics are better for the engine, but when to change over is a controversial subject.


Towing what you're towing, you need guages. There are some here with LLY's and no mods, who've installed guages and seen the LLY's hit 1400 degrees towing. I think the concensus would be that's too hot for extended periods of time.


Do a few searches and you're going to find lots of information on the questions you've asked...http://www.dieselplace.com/forum/smileys/Geek.gif

Edge makes a great package. I've Had one on last three trucks I've owned with great success. We also have sold a lot with very little problems and edge has been great to work with. We also sell and install ATS exhaust systems that I like because they sound great but not loud and no resonation in cab which is good on a crew cab if you haul a friend or two. OK if you don't have friends.

http://www.dieselplace.com/forum/smileys/Big Smile.gifThanks Zeeb. I do tow heavy (between 15-18k toy hauler depending upon load) which is why I switched to syn's at 4500 miles, went with 75W140 GM lube in the rear end. The guys on the GMDieseltech site have pretty good intel on the break-in period.


I have spent a considerable amount of time gathering intel on this site, unfortunately some of it is just over my "rookie" head. BTW, that air filter post is long, 10 pages. I read the first 2 then went to the last page. Not sure what I'll do at this juncture. My logic with the uni was to increase air flow to assist in reducing EGT's. http://www.dieselplace.com/forum/smileys/Confused.gif


GM specs this truck at 23,500 GCWR and I'm going to be right at it with what I tow, most likely a bit over. I'm switching the tranny over to transynd and the deeper pan this weekend to improve performance.


Is the exhaust on the LLY the same as the old LB7? Air intake system/filter? Just want to make sure I'm comparing apples to apples when reading these posts. Thanks for the input. JJhttp://www.dieselplace.com/forum/smileys/Big Smile.gif

Is the exhaust on the LLY the same as the old LB7? Air intake system/filter? Just want to make sure I'm comparing apples to apples when reading these posts. Thanks for the input. JJhttp://www.dieselplace.com/forum/smileys/Big Smile.gif





With the exception of the CAT install, the LLY is the same exhaust as the LB7 and I believe that the certain models of the LB7 that came with CAT's are the same as the LLY.


There are members who have replaced the front, or "down pipe" I think it's referred to, with the LB7 version to eliminate the CAT.


I've not seen anything posted to the effect that an EGT drop will occur if you change the intake system on a basically stock truck. There are those who really go after it with the modifications, and they do seem to benefit from the change. But I've seen members post dyno runs on trucks with just a programmer/module installed and not see any increased HP or decreased EGT's associated with a change in the OEM intake/filter set up. This is talking about the later model trucks since IIRC, the earliest ones had some problems with the air intake due to it's positioning mainly. About the only real change I've seen reported with changing the intake/filter system is by those who'd like to hear the turbo more, which is not something I'm looking for.