MBRP Downpipe Install: 2011 Chevy Duramax LML

[@ArmedNewYork]

Hey thanks for the video! Ask and you shall receive I guess, I asked them to make one during the Dyno day and here it is! Great job guys!

[@haydendenard2693]

Pro tip from a diesel mechanic a crows foot O2 sensor socket works best on the sensor This just randomly played on my KZbin because I'm a diesel mechanic and I am always watching diesel related stuff

[@thoroughbreddiesel]

Thanks for sharing!

[@haydendenard2693]

@thoroughbreddiesel that's the wag the industry needs to be it's getting more complex every year sharing knowledge is the right thing to do hoarding it to be greedy so "you're the only guy around who knows how to do it" isn't right

[@andrewescalona3857]

Thanks for cutting the video... been stuck getting the down pipe to pass the up pipe on installing and nobody has a decent video on how they snaked it up there

[@thoroughbreddiesel]

You're welcome.

[@stuntinITup]

Thanks for the video guys we just did mine on my 13. I actually pushed the exhaust back with a ratchet strap and slid the downpipe through the fenderwell and it was a cake job all except with the tab coming off of the downpipe to bolt to the manifold didn't line up without pulling the mating surface of the top flange away from the turbo.

[@Robert_H_Diver]

Best video on KZbin for this procedure. Thanks!

[@thoroughbreddiesel]

Thanks!

[@jrp2614]

I'd actually recommend taking off the downpipe heat shield as there is little room between the motor and firewall, can't get it out with it on, everything on these trucks is hard to get to as is. Also, if you have trouble getting to the O2 sensor, go to your local auto parts store and rent some 22 mm sensor sockets, saved my life.

[@thoroughbreddiesel]

Yeah we were going to let you know about the video but likes you beat us to it. Happy to hook you up!

[@thoroughbreddiesel]

And patients..... lots of it! Although is probably easier without holding a camera. Enjoy fellas.

[@Mebob2001]

very good video, this job just takes time, not overly hard, just takes time!

[@Mebob2001]

for ANYONE DOING THIS make SURE the downpipe to DOC pipe flange is perfectly FLAT, Gm has a TSB out for white smoke, diesel smell, ect.. it has to do with a gap at the flange there, you can go to GM and get the updated clamp with a gasket for there, it will solve the issue , this is only if your going to use the hydro carbon injector and DPF still on

[@thoroughbreddiesel]

Awesome info man. Thanks for letting us know!

[@Mebob2001]

Thoroughbred Diesel when working on them daily in a dealership you pick up on some issues, its mainly rust that causes the issue

[@iamatt]

You made that turbo heat shield removal look like nothing come on. I'm stuck at the moment, my stock downpipe is seized to the turbo!!

[@ronnygeissert9160]

Do you have to put sensors back in if your truck is deleted and the new downpipe doesn't have the ports for the sensors?

[@tnutz77]

It's pretty sad when the MBRP down pipe looks better made from stock. The welds looked cheap on the stock brackets. Great Video!!!

[@stevenfuchs2548]

Great Video, does this truck still have the DPF and DEF canisters still on when you pushed the exhaust back? I have an opportunity to acquire an 11 LML and I'm looking at these to decide what I will do. Thanks again for these!

[@nickc2708]

Sounds of success

[@rodolfogonzalez8687]

Igual there! I’m sorry but I don’t understand what’s the BENEFIT TO UP GRADE THIS PIPE I got a 2011, Can someone explain please. Thanks

[@Carlos-ip2ir]

The book really Cals to remove transmission for this that's crazy

[@yanivturgeman9328]

Hey thanks for the video helped me a lot..(:-)...

[@CrpMag]

I’m stuck in California, so there is no way around the DPF/DEF monstrosity. Will a downpipe help me much seeing as how I am stuck with all this eco BS? I’m looking only for lower EGT’s.

[@KingRanchW]

yes a down pipe will help alot

[@Aereaux]

I realize this is an old video, but it is so much easier to put the truck on a jack stand and remove the tire.

[@thoroughbreddiesel]

MyersBros Productions That’s up to you. We replaced ours.

[@verapala9181]

a

[@Moonferd]

I have a question if I were to put a new downpipe and exhaust from MBRP what clamp would you use to tighten the exhaust and downpipe together? A v band clamp?

[@thoroughbreddiesel]

Your v-band clamp that comes factory with the truck will work.

[@thekickstartkid]

Would i have to use a tuner doing this down pipe and full dpf and cat delete mbrp on my lmm?

[@thoroughbreddiesel]

On a LMM, this downpipe could be done with emissions compliant vehicle.

[@Tony_Seed]

So I put the 3” down pipe on my lml, reused the old v band clamp and even just got a brand new one, I put everything together double checked and even tried running the clamp super tight and less tight & my down pipe keeps blowing off the back of the turbo while I’m driving, WHATS THE DEAL?

[@eugkra33]

2011-2015 now, although half way through 2015 they added a flange to one side. I still can't figure out if my dad needs this one or the 2015.5 year version.

[@thoroughbreddiesel]

The easiest way to check is the downpipe if it has a v band clamp or a three bolt flange at the exhaust pipe.

[@andycoffman9317]

@@thoroughbreddiesel so what mbrp pipe do we need if we have a 3 volt flange? Sinister sent me one for the band clamps and I have flange style

[@LG4yt]

What make/model is that stand you're using to suspend over the engine bay?

[@camco15]

I loosen the clamp up but the clamp is stuck on there how do I get it off

[@mitchellmurphy8530]

Can you use penetrating oil on the sensors?

[@allancoates6231]

How long it take to get the 22 metric off the top of the down pipe? I just tried and it's completely seized and won't budge

[@thoroughbreddiesel]

+Allan Coates Penetrating oil, patients, and leverage. Can't tell you the quantities its going to require but those are you ingredients

[@Moonferd]

Try taking the downpipe off the turbo so you have more room to get the wrench in there.

[@southernlandscaping923]

So I installed this uppipe and an up pipe for my deleted 2015 lml. The issue I'm having is that I seem to have a boost leak because the truck makes a loud screeching noise while revving . I just can't seem to find out where leak could be if it's actually that

[@southernlandscaping923]

I have the mbrp 3" downpipe and a up pipe

[@RossRinSD]

Help me max out my credit cards... Installed my turbo and pyrometer gauges this week in prep for a tune and DPF/DEF delete. Figured I'd do the exhaust at the same time as the tune. What exactly does this downpipe do? Remove a restriction? How does it help lower EGTs?

[@thoroughbreddiesel]

The downpipe is a nice upgrade to smooth out the transitions in the downpipe that will allow more airflow and quicker turbo spool up. This in turn will help to lower your EGT’s.

[@zacharylawrence6602]

If I installed this on a lbz will it throw any codes ?

[@thoroughbreddiesel]

+Zachary Lawrence For the LBZ you want to use the GM8424. There should be no SES lights with this install, but, as with any performance modification, we always suggest that you be aware that tuning would be a compliment to the install.

[@garyp3982]

How about a how to for exhaust manifolds & up pipes?

[@thoroughbreddiesel]

We have several exhaust manifold and up pipe related videos. Check out our channel or use the search feature. It is hard to hit everything but we will see if we can explain on those topics you have mentioned.

[@andyjohnson7064]

How long does this usually take to do on 2015 and 5inch exhaust install?

[@thoroughbreddiesel]

I would carve out a couple hours for this.

[@joeschweighardt8235]

did you custom build that ladder/step you are using?

[@thoroughbreddiesel]

It is a topside creeper. You can find them just about anywhere that sells shop supplies.

[@carlosccs502]

how do you guy's removed the turbo dowpipe bracket. I'm having a hard time removing it

[@thoroughbreddiesel]

There were several takes to this. It is difficult.

[@spoppusn1]

Is it worth removing the tire if I am not lifted?Do you need to put the turbo heat shield back in?('12LML)

[@thoroughbreddiesel]

Removing the tire will go a long way to keeping you cleaner! The MBRP downpipe has exhaust wrap and the instructions do not call for the heatshield to be reinstalled.

[@midamultitool1387]

Safe to assume these steps will also be the same in a 2016 LML?

[@thoroughbreddiesel]

The newer model trucks are a little bit more involved. See these instructions: www.thoroughbreddiesel.com/assets/1/pdf/gm8428-install-mbrp.pdf

[@1JabberJaw]

These Duramax's are sp fucking hard to work around man..

[@thoroughbreddiesel]

Preach on brother.

[@mastermechanic1154]

is this pretty much the same steps for a lmm dmax?

[@thoroughbreddiesel]

Yes.

[@myersbrosproductions3753]

Can I leave the turbo heat shield off?

[@thoroughbreddiesel]

We suggest replacing all heat shields.

[@bhollingsworth]

Best part of the video.... 15:57

[@thoroughbreddiesel]

lol we are LIVE ACTION around here.

[@davebensonmum7412]

I have a 2005 chev with LLY I love the truck but there is definitely some turbo lag when you floor it. In fact its better if you don't give full throttle immediately, so will the down pipe help with that and what else can I do to minimize lag time?

[@thoroughbreddiesel]

The downpipe will not correct all that you are noticing with the turbo lag. It could be as simple as a tuning adjustment that needs to be made.

[@davebensonmum7412]

+Thoroughbred Diesel Thanks for the response, I'll look into the issue some more but in the meantime I'm interested in a full turbo back exhaust as well as a lift and big tires

[@thoroughbreddiesel]

Dave Bensonmum Give us a call for free advice at [phone] and we will see if we can find the best combination for your set up.

[@averagejosh810]

Dave Bensonmum intake if you are still having the lag issues

[@jarotex]

Wade, did you have any issues mating the new downpipe to the back of the turbo? It's very difficult to see back there, I thought I had a perfect clamp and fit but then raised the hood after a long test drive and saw a little bit of smoke coming from there. Not sure if that's exhaust or the the new pipe and wrap getting hot for the first time. Didn't smell like diesel but was difficult to tell.

[@msuggs2230]

How bout a lmm motor, someone said you must remove the cab?

[@thoroughbreddiesel]

The process will pretty much be the same as this, cab removal is not necessary.

[@fuqutube]

You guys ever heard of air tools, lol

[@tedshantz6193]

why is nobody ceramic coating downpipes.?

[@thoroughbreddiesel]

I really don’t have an answer for that other than there is usually a couple hundred degree temp difference post turbo, maybe the heat blankets that some come with are sufficient enough to keep from having heat transfer into the cabin while not retaining too much heat post turbo?

[@thenamelessyee]

Could you run a duramax with no exhaust pipe passed the down pipe

[@thoroughbreddiesel]

It’s gonna be loud, and you run the risk of burning any wiring harnesses or anything else that could be close to the pipe. I don’t suggest doing this.

[@mariotopic5184]

Can you install a downpipe on an LML without having to tune it?

[@thoroughbreddiesel]

Yes this downpipe will retain all sensors.

[@josephdeerslayer9007]

need to find someone in the Des Moines area to do one of these on my 2005.

[@GarrettRC5thscaler]

Right these procedures are above my pay grade so to speak.

[@timt2tinsley]

Why not use Anti-Seize on the bolts ?

[@thoroughbreddiesel]

Using Anti-Seize wouldn't hurt anything to use.