Duramax LML DPF Delete Kit: 2023 Reviews & Buying Guide - Rufus Corporation (2023)

In this guide, we’ll reveal you exactly how to get more power and also far better mileage out of yourDuramax LMLdiesel outfitted truck, by creating the components you’ll require for a full DPF Delete Kit

The major objective is for your truck to reach its optimum tire-frying (or fuel saving) potential.

Deleting the failure-prone DPF and also EGR emissions systems will certainly permit your vehicle to breath a lot less complicated as well as run extra effectively, all without having the worry of inescapable factory discharges tools failure.

One point to be knowledgeable about however, if you live in the USA and also intend to remain to drive your truck on public roads, you require know that erase tuning is for off-road usage just.

If you reside in a country that doesn’t have such constraints though, as well as want to obtain the optimal possibility out of your truck, you will discover that there are a lots of parts offered for removing the 2011-2016 Duramax LML , and just as lots of choices on exactly how to tackle adjusting it.

Great deals of various components can obtain us from A to B in the remove roadmap, however there are some that stand apart from the remainder, and also we’ll review the what part and the why in this guide– beginning with two receiver options that are both remove capable.

An inexpensive remove tuner for the Duramax LML

H&S MiniMaxx DPF and EGR Delete Race Version

The powertrain control systems in modern-day trucks are so greatly connected into the emission system, when you attempt to run without these systems installed you’ll wind up just throwing the engine computer system into limp mode. This kills your mileage and efficiency, unless you have a means of managing the engine computer to modify those features out.

Among the most significant needs, as well as the first thing to seek in a receiver, is if it really has the capability to really remove the DPF and EGR systems. You’ll truly wish to ensure the tuner you obtain can do this, as there are some receivers available that aren’t actually capable of programming the PCM to erase the factory exhausts systems.

Fortunately is that the H&S MiniMaxx Receiver does enable you regulate over the emission systems, as well as much more. It’s not going to be able to push the restrictions of contemporary tuning innovation, however it will definitely have the ability to permit you to erase the DPF and also EGR and tons up a pre-made tune for even more HP or much better mileage.

Possibly it’s finest feature is how simple it is on the pocketbook, compared to the more modern-day receivers. It does give good worth per dollar in just how much it can enhance your vehicle over supply.

The Mini Maxx race tuner becomes part of the next generation of diesel downloaders from H&S that use whatever a diesel proprietor can desire, done in one modern unit. Special to H&S Efficiency, the Mini Maxx provides the adaptability of shift-on-the-fly adjusting, in addition to providing you the capacity to monitor important engine data at a look. The full color, high resolution display permits the user to see as much as 4 parameters at once.

The very best remove receiver for the Duramax LML

EZ-Lynk AutoAgent

If you require more capacity from a tuner, or if you want a tailored tune to press the most out of your Duramax and also it’s transmission, look no further than the EZ-Lynk.

This little man takes the adjusting of your Duramax to an entire new level. It’s generally the future of adjusting.

You may discover that it does not take a look at all like a standard receiver, it entirely does not have any type of screen or switches. This is because the EZ-Lynk is managed totally by your mobile phone.

It collaborates with Apple and also Android phones, which gives it the ability to have what I think to be among the coolest tuner features I have actually ever before seen: the ability to sync wirelessly with the EZ Lynk’s adjusting “cloud” software application.

That means that you can publish details directly from your truck to your favored personalized tuning store, as well as they can make use of that details to build your truck a genuinely personalized song. All without needing to bust out the laptop computer, which is pretty incredible by itself.

It does set you back a bit greater than the entry-level H&S, yet it offsets it in attributes. The tune assistance from PPEI is the best choice for nailing down the best tune for your vehicle, and also the DSP5 switch enables you to change between songs on the fly (SOTF) which is an outstanding function.

Chevrolet/GMC- 2011-2016 LML Duramax – Includes Song Files

Shift on the fly 11-16 with stock exhaust: Supply, 35HP, 65HP, 100HP, 120HP

Change on the fly 11-16 with removed race exhaust: 30HP, 60HP, 120HP, 150HP, 200HP (Calls for a lift pump upgrade).

Also Includes:

Data logging.
Live lorry diagnostics and also troubleshooting.
Mobile application that interacts flawlessly with your car.

LML DPF Erase Pipeline.


Replacing the section of the exhaust that generally consists of the DPF is very easy when you make use of a full exhaust package like this straight pipeline system.

This exhaust set comes prepared to screw directly to your downpipe and also offers your turbo a straight shot straight out the back of your truck. As you can visualize, a straight shot without all the restrictions of the honeycomb DPF filter not only seems better, it streams way better than previously. Naturally, much less restrictions = even more power and even more effectiveness.

This exhaust set works perfectly for deleting the LML vehicles– even with different bed and taxi configurations, although a few of the shorter length designs require to trim it to fit.


Fit: 2011 to 2015 Chevy/GMC 2500/3500 Duramax 6.6 L Turbo Diesel.

Will Only Fit Older 2015 Models With V-Band Clamp On OEM Turbo Down-Pipe. Excludes Newer 2015.5 Versions With 3-Bolt Flange On OEM Turbo Down-Pipe.

Will Fit Extended & Crew Taxicab, Short Bed or Long Bed.

Mandrel Bent Tubing For Maximum Circulation. Straight Pipeline Layout, No Muffler Or Tip Included.

Aluminized Steel. Premium & Affordable Products. Expert Installation Advised.

Various other Deletes:.

LML EGR Erase Kit.

An EGR remove set is actually sometimes even more of a preventative repair work item for LML duramax engines, because of exactly how blocked the system obtains. I see a lot of individuals needing to do repair work on virtually the entire EGR system over the vehicles lifetime.

Why not simply do away with the migraine entirely. That’s where this package comes into play.

Currently, it holds true that the EGR feature can be modified out of the ECM with a receiver, and the EGR shutoff kept in its place, in which instance you wouldn’t require a blockoff plate. There’s a possible failing when you do that though, the increase stress from the turbo can still overcome the EGR shutoff even if the feature is switched off, triggering exhaust gasses to leakage past the shutoff as well as right into the consumption.

This blockoff package eliminates that concern and guarantees that the exhaust gasses can not get in the consumption system at all anymore.

If you’re wanting to take on the install of this set yourself, or if you’re seeking even more info concerning EGR deletes for the LML, have a look at the set up section of this post.

Increases off the line torque and equine power. Entirely replaces/removes the entire EGR system.

Appreciate quicker turbo spool as well as reduced EGTs together with faster re-circulation of the coolant causing reduced coolant temps. An EGR Erase capable race tuner is called for combined with thiskit.

LML DEF/Urea Storage Tank Erase.

After you tune the emissions demands out with a remove receiver, as well as change the exhaust to remove the DPF and DOC, you can then remove the dreadful eyesore that is the DEF tank. This tank, if you had not noticed, stands out under the frame on the passenger side of your vehicle.

Merely undo the sensors as well as filler, then unbolt the storage tank straps to obtain this plastic pee container off your vehicle.

No more stressing regarding filling the urea. That alone deserves all the problem of the exhausts remove.


We hope this guide was helpful to you and gives you some direction on which parts you’ll need to put together and tune a full DPF Delete Kit for yourDuramax LML

Thanks for reading and if you have questions or anything to add, feel free to reach out in the commentshere!


Is it worth deleting a LML Duramax? ›

Outside of expensive repairs these emissions systems also create a lot of backpressure in the exhaust system which is bad for the turbocharger. For both preventative maintenance and performance reasons, deleting the Duramax LML DPF system is popular.

Is the Duramax LML a good engine? ›

LML Reliability

Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. Aside from the CP4. 2 injection pump, LML Duramax was a reliable motor that could last 300,000 to 400,000 miles when properly maintained.

Should I delete my Duramax? ›

Deleting the DPF will result in a more reliable and longer lasting engine. Keeping up with regular maintenance you can get 500k miles out of the LML Duramax. Freeing up the restriction in the exhaust alone will increase horsepower 20-30hp. Additional power is also available from DPF delete tuning.

How much does it cost to delete DPF on LMM? ›

A delete kit and delete-loaded tuner are the two things required to delete the DPF on the LMM. Delete kits run about $700 with tuners costing about $1,000. Ultimately, it costs about $1,700 in parts to delete the DPF which is also the same cost as a new aftermarket DPF system.

What is high mileage for a LML Duramax? ›

What Is Considered High Mileage for a Duramax Diesel Pickup Truck? Duramax is General Motors' brand of diesel engines for GMC and Chevy trucks. They're well-known for their reliability. Duramax trucks above 300,000 miles are usually considered high mileage.

What is a common problem on a LML Duramax? ›

A faulty fuel filter restriction sensor isn't the only common problem encountered by LML Duramax owners. This engine's CP4. 2 injection pump is notorious for catastrophic failure. You can learn all about this expensive failure and how to prevent it right here.

Which is better LML or L5P? ›

To put this all-in perspective, the L5P puts out 48 MORE horsepower than the LML and 145 lb. ft. more torque than its predecessor. At all engine speeds, in all conditions, the L5P simply trounces the LML.

Does an LML need a lift pump? ›

You should install a lift pump if you just want to have the power there for fun, or if you have a dedicated competition truck. The add filtration, performance gains, and taking stress off of the Cp4 make a lift pump an essential upgrade for your LML.

Should I let my Duramax warm up? ›

Allow Time to Warm Up the Engine

In order to start a diesel engine and keep it running in cold weather, you must make sure you allow plenty of time for your engine to warm up. If you do not let your engine warm up before driving, you will make it work harder than necessary, which will lead to problems later on.

What are the benefits of deleting your diesel? ›

There are three key benefits associated with DPF delete: more engine power, better fuel economy, and reduced maintenance costs.
  • More power: After deleting the DPF, most owners report a better performing, faster responding engine.
  • Better fuel economy: Fuel economy is a big winner after deleting the DPF.

Why can't you delete a diesel truck? ›

According to EPA regulations, it's against the law to tamper with emissions equipment in any way, including performing a truck delete. Alongside the federal laws that ban the kits, many state and local municipalities prohibit them too.

What are the disadvantages of DPF delete? ›

However, there are some serious drawbacks to DPF and EGR delete procedures, such as:
  • Legal consequences – fines, points on your license or even jail time.
  • Reduction in overall horsepower.
  • High Costs, similar to DPF/EGR installation.
  • You will fail your MOT.
Feb 25, 2022

What is the disadvantage of removing DPF? ›

Are there any downsides to doing a DPF delete?
  • Increased risk of engine damage: Without the DPF filter, diesel engines can accumulate soot and particulates on engine components, leading to excessive wear and potential engine problems. ...
  • Warranty voidance: DPF deletion will invalidate your vehicle's warranty.
Oct 11, 2022

Does removing DPF cause problems? ›

If a filter has been removed, the car will fail its MOT. Removing the DPF will sometimes cause the warning light to glow – and this itself is an MOT failure point: no dashboard warning lights should remain on during the test.

Does deleting a diesel add horsepower? ›

There are a lot of benefits to doing a diesel particulate filter delete on your diesel truck. Diesel engine horsepower, better fuel mileage, and more torque are all common reasons why people decide to remove their DPF system.

What are the pros and cons of deleting diesel trucks? ›

The pro is you may get more power, and better fuel mileage. The cons are that it violates emissions laws, is bad for the environment, might get your registration suspended, and will void your warranty. You can face fines. It could even get your vehicle impounded.

Do LML Duramax break cranks? ›

Not specific to one version of Duramax in particular (ex: LB7, LLY, LBZ, LMM or LML), the problem exists across all generations. The crankshaft usually breaks near the number one rod journal due to a combination of excessive rpm and the large external counterweight.

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