Did you know that the biggest fuel system weakness on the 2011-2021 6.7L Powerstroke is the fact that if the CP4 high pressure fuel pump has a roller lifter failure, the pump will explode and send metal shrapnel all throughout your entire fuel system before you can even react?

This is actually a commonly known problem with these pumps, and at this point I’m sure most owners of Super Dutys have heard of the infamous Bosch CP4 high pressure injection pump failure.

Of course, this absolutely decimates everything in the path, killing your expensive injectors and clogging every single passage, also ruining the high pressure rails and the fuel lines all in one shot. This get very pricey (to the tune of several thousands) and quick. The worst part? It can happen at any time, which means that it will most definitely happen at absolutely the most terrible time possible.

Is there a solution for 6.7L Powerstroke CP4 Failure?

Fortunately, there is actually a preventative step that you can take to keep a potential CP4 failure from being so expensive and destructive. The answer is a CP4 fuel bypass (aka disaster prevention) kit, and it is just about the perfect solution for this massive problem.

If you’ve already had the misfortune of experiencing a CP4 failure, well you have most certainly found out that it gets very expensive, really quickly. This is such a a common occurrence that Ford actually has a part number for all of the parts needed for a complete fuel system replacement. This tells me that they have run into contaminated fuel system often enough to make a special part number just for a kit to replace it. This fuel system replacement kit is Ford Part #EC3Z-9B246-A.

The Ford parts kit runs about 3k on a good day (core charges extra) and the labor time to perform the complete fuel system overhaul is 17 hours (as per the Ford factory service manual.) At dealer labor rates, that translates to about 5.5K, and that’s not even including the parts kit listed above.

This is what you’ll need to replace in a contaminated fuel system scenario if your pump lets go:

• New CP4 High Pressure Fuel Pump
• All the high pressure fuel lines mounted on the engine
• Both the primary and secondary fuel filters
• Both of the high pressure fuel rails
• All eight fuel injectors
• Low pressure fuel injector return hose assembly
• The fuel delivery pressure switch

Ouch. Makes the disaster prevention kit a very inexpensive value in comparison.

What is a 6.7L Disaster CP4 Prevention and Bypass Kit?

The kit is nothing short of a (power) stroke of genius. In essence, it takes the fuel pumping out of the bottom of the pump, and instead of sending it back through the entire system, it simply sends it right back into the fuel tank and filters, out of harms way. This keeps any potential metal debris from a high pressure fuel pump failure out of the rest of the system entirely.

Fun Fact: this CP4 failure is such a common occurrence that usually happens right around the 100,000 mile mark, that there is actually a class action lawsuit over the very issue of Bosch CP4 pumps failing.

Which is the best CP4 disaster prevention kit?

When it comes to a specialty product built to solve a specific problem, we usually would recommend the original developers of that product, especially if they pay as much attention to the design and ongoing development as the original disaster prevention kit makers at S&S Diesel do.

Hats off to their engineering department for the much appreciated features that they have evolved into this kit. We especially like that the fuel lines that with the kit are the factory Ford style quick-connect push lock fittings, It makes the install a total breeze, not having to worry about cutting and fitting custom lines, with the potential to introduce debris to the system from that process alone.

We are currently looking at the Gen2 Version of the bypass kit, which they have improved from the first version by a considerable amount, with one of the biggest new features being that they have extended the supply lines by an extra 25 inches away from the pump. This has the benefit of preventing the possibility that the CP4 pump failure clogs the fuel system with enough debris to back feed the resulting contaminated fuel back into the supply. The Gen1 (and the knockoff kits) were made in such a way that (in some cases) it is possible for the clogged system to overrun the fuel return and still send the metal debris back into the supply.

They’ve also thought of what happens when contaminated fuel is sent through their reroute kit, and have made a crucial upgrade to make dealing with a failure much, much easier. Normally, when a failure happens the fuel is bypassed as designed, keeping it from killing your expensive fuel system. The problem with the older kit and the knockoff is that this would still require a tank drop and a fuel system clean out, because the debris would be sent to the back. Still a much preferred option than replacing the entire fuel system, but also still somewhat of a pain.

They found that they could mount a filter in the return flow before it goes all the way back into the tank, preventing the contaminated fuel from ever making it’s way back to through the fuel lines to the tank and out through the lift pump. This makes cleaning up after a pump failure a much easier job. They incorporated a 2-micron filter into the design, that even has a clear bowl that can be checked instantly if you suspect a pump failure. If you need to replace the extra filter, they even sell that separately #6130120.

The best disaster prevention kit for 2011-14 models is this one here.

They make the new S&S Gen2 CP4.2 Bypass Kit for the 2015-2019 6.7L Powerstroke, and for those years you’ll want to make sure to buy part #7031190.

You’ll need a different kit for the 2020 and 2021 6.7L Super Duty trucks, as the layout of the lines have evolved somewhat on the newer models. You’ll want part #7032020 for these years.

How does this kit work?

The CP4 pump is internally lubricated by diesel fuel from the tank. After lubricating the crankcase area of the CP4 pump, fuel enters the high pressure pumping chambers and exits under pressure to the fuel rails and fuel injectors. The weakness of the CP4 pump lies in the crankcase area where a set of roller lifters ride on a camshaft. When the failure event occurs the lubricating fuel becomes contaminated immediately. Our bypass kit mounts to the CP4 pump and changes the routing of the fuel flow so that lubricating fuel from the crankcase is directed back to the fuel tank to be filtered before going through the fuel system again. Thus all fuel entering the pumping elements of the CP4 pump and leaving for the injectors is always routed through both of the vehicle’s fuel filters to eliminate any change of contamination from a high pressure pump failure.

Will this kit keep my high pressure fuel pump from failing?

No, the disaster prevention kit does not keep the pump itself from failing, it only protects the rest of your truck’s fuel system from the disaster waiting to happen. There are plenty of options to upgrade your Powerstroke’s pump and fuel system to less failure prone pumps, however that gets to be a pricier and much more involved option.

Aside from adding this bypass kit, the best thing you can do to prevent a CP4 pump failure in your truck is to use a fuel treatment additive to keep water and other contaminates from harming your pump and sending it down the road to imminent failure.

Does anything else need to be modified?

Nope, the bypass kit has been fully tested and certified. It doesn’t modify any fueling characteristics, and there is no performance benefit (other than keeping your wallet intact) so you wont have any trouble using it on a road legal truck. It can be added just fine to a fully stock truck with no other mods needed.

Conclusion

Has your Super Duty had a massive fuel system failure, or does the potential of a roller lifter pump failure stranding you (and your wallet) keep you up at night? Let us know your thoughts in the comments below, and as always, thanks for reading!

Welcome to our delete guide for the 2008-2010 Ford 6.4L Powerstroke.

In this article, we will cover the available delete kit options for your Super Duty and what they can do to improve your engine’s reliability, while also increasing your MPG and HP.

The 6.4L responds excellently to a good tune and a couple deletes, by running it on the stock ECU alone you are missing out on a huge increase in the driveability experience that your powerstroke is just waiting to give you.

Why Delete?

If you’re wondering why you would want to remove any factory systems from your truck and what the benefits are – hopefully this will help to answer those questions.

Benefits of DPF removal:

• Drastically slows down the bad oil dilution problem that 6.4s have, which decreases wear and extends engine life.
• Improves exhaust flow, turbo spool rate and lowers your exhaust gas temps, mainly because the restriction is no longer slowing the exhaust gases after the turbo.
• More efficient as far as MPG and HP without the restrictions or regen cycles.

EGR delete benefits:

• Better MPG by eliminating hot exhaust gasses from entering the intake.
• Extends the life of the EGR cooler because there is no more 1200 degree exhaust gasses passing through, which can cause the coolers to crack and fail.
• Removes the risk of premature engine damage from EGR system failure.

So now that you can see the benefits of deleting your EGR and DPF systems, you might be asking what could possibly be the downside?

Cons:

The biggest, and really only con to DPF and EGR removal is that these type of modifications are for off-road use only and not-applicable if you drive your truck on public highways, and this applies anywhere in the United States.

That being said, if you live in a country without emissions regulations, it would be a disservice to the life of your truck if you don’t do the deletes.

How to delete:

To make it easier for those looking to find the right parts to pull this off, below I’ve listed what you will need for each type of delete and where to find them.

Note: this guide is only for the ’08-2010 Powerstroke F-250, F-350, F-450, or F-550 Super Duty, if you have the newer 6.7L click here.

Best Delete Tuner for the 6.4L

• SCT x4 Handheld Tuner with custom tunes

Hands down the best option for a 6.4 programmer, this preloaded SCT handheld has tunes designed specifically for the 6.4L Powerstroke, ranging from a mild +40HP increase, all the way up to +250HP, for trucks with really built powertrains. There are also towing mode tunes that help greatly when you are trying to have the power and efficiency for pulling heavy loads.

The SCT tuners are flexible and highly customizable, but the most important feature; with it you have all the preloaded tunes that retain emissions, and the ones that allow you to delete the EGR and DPF individually or both together.

The 6.4L tends to run best as a daily driver at the +135 HP tune with EGR and DPF deletes installed. It will feel like a whole new truck, just keep the boost below 40 psi if you’re still on stock head gaskets and bolts.

If you’re feeling a little froggy (and have the supporting mods) you could try the +185 or +250 tunes, they really open the truck up. like crazy. Just beware of the touchier throttle on the higher tunes, it takes some getting used to. Also axle wrap becomes more of a concern at that HP too, take a look at some traction bars to solve the jerkiness.

Bully Dog EGR DPF Delete Tune for 2008 - 2010 Ford 6.4L Powerstroke | 3 Tunes

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Technical support
Custom delete tunes
Choose between Power Levels (If 3 are not chosen, we will choose for you)
+35hp
+80hp
+135hp
+185hp
+250hp
increases power
Increase MPG

Uses

DPF and EGR Delete
Increase in MPG
Increase in HP and TQ
Can be calibrated for larger tires

Cheapest Delete Tuner for the 6.4L

•  H&S Mini Maxx Race Version

Another really good tuner for the 6.4 is this one from the now-defunct H&S. The Mini Maxx Race is the hot version that allows for the DPF and EGR to be removed.

Right out of the box it has preloaded tunes for the 6.4L which let you delete the EGR and DPF and unleash your truck. It doesn’t have as many tunes, or the amount of customizability for the 6.4 that the nGage comes with, but it will allow you to add a lot more power and delete the emissions systems – for about half the cost.

It’s the cheapest way to get the ability to delete the emissions systems, and it also serves as a good live engine monitor at the same time, with diagnostics built in. A solid 6.4L programmer choice, the MiniMaxx will work great for 90% of what daily drivers need.

H&S Mini Maxx DPF Delete Race Tuner Ford, Chevy & Dodge

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Best Exhaust Kit for Removing the DPF and DOC

• 4″ Turbo Back Race Exhaust Kit

A race exhaust with a straight pipe to remove the DPF filter and DOC (catalytic converter) is required if you are running a tuner that deletes the DPF from the computer.

Otherwise the filters will get clogged with soot because the regen will be turned off. This is terrible for backpressure, and has the potential to build up so much that it can pop your head gaskets if the restriction isn’t removed.

This replacement exhaust takes care of the section of factory exhaust that normally houses the DPF and cat/DOC, eliminating those huge restrictions and replacing them with a straight through pipe. Not only does it replace the filter section, it replaces the entire exhaust from downpipe out to the back of the truck.

Turbo whistle will be a lot more evident with this type of exhaust, so if you want to quiet that down for some reason, you’ll want to pick one of the exhausts that include a muffler. You could also always add your own or just reuse the factory muffler.

2008-2010 Ford Powerstroke 6.4L Race Exhaust

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No Bungs
Without Muffler
4″ Aluminized Steel
OE Style Hangers For Easy Installation
Maximum Flow For Competition & Off Road Applications

Best 6.4L EGR Delete Kit

• 6.4L Powerstroke EGR Delete Kit
  

Technically, after installing a tuner that deletes the EGR on your 6.4, it will no longer function and will be disabled. However, simply deleting the EGR codes in the computer and doing nothing else to remove the system is not the recommended way to do it.

Leaving the EGR installed can still allow exhaust gasses to flow into the system, causing soot build-up that makes the valve stick open. It’s just best to remove the system entirely with an EGR delete kit that has replacement coolant lines to remove the EGR coolers and the block off plates for the exhaust side, as doing it this way will eliminate any possibility of unreliability in the future.

The EGR coolers have a terrible way of cracking and failing on these trucks, and when that happens it can spell disaster for your engine – the way the system is designed the failure can allow coolant to enter the cylinders, causing some very serious damage if not noticed. It’s even possible to hydro-lock the motor, which very quickly turns the engine into a write-off.

This EGR Kit includes the intake elbow for a cleaner install and better airflow.

2008-2010 Ford 6.4L Powerstroke Diesel EGR Valve & Cooler Delete Kit Intake Elbow

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This competition tested EGR Cooler Delete Kit is a great replacement for your entire stock Powerstroke EGR system. This kit gives your Ford Powerstroke's engine quicker turbo spool, lower EGT's and lower coolant temperatures. High Quality Construction in an EGR Delete Kit Sinister Diesel has manufactured this EGR Delete Kit out of more durable materials than your factory EGR. The housing of this kit is made from 304 stainless steel and tough CNC Machined billet aluminum. This product is available for a 2008, 2009, or 2010 Ford Super Duty F-250/F-350 with Powerstroke 6.4L. WARNING, this EGR Delete Kit can never be installed on any vehicle registered for use on highways or public streets. Race Tuning Required

Best Air Intake for the 6.4L

• aFe Power Magnum FORCE Performance Intake System
  

This kit from AFE actually does what most air intake kits only claim to do. By enclosing the filter in a heatshield, AFE has figured out how to keep the air filter from heatsoaking in the hot engine bay air, while still allowing for easy access and a way to visually check the condition of your filter.

It uses a oil-free washable type filter, which can be washed and reused multiple times over. This is a big advantage in my opinion, saves a ton not having to buy new filters every tune-up, simply wash the filter with soap and water and let it air dry before re-installing.

aFe Power Magnum FORCE 51-41262 Ford Diesel Truck 08-10 V8-6.4 (td) Performance Intake System (Dry, 3-Layer Filter)

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Features

• Outflows the factory intake by 26%. Produces an additional 13 horsepower and 36 lbs. x ft. torque
• 3-Layer non-oiled, washable synthetic media for the perfect balance of performance, protection and convenience
• Powder-coated one piece housing utilizes stock mounting locations
• Heat-insulating molded plastic tube replaces the stock intake tract
• This product is not CARB exempt at this time and is not legal for sale in California or use on vehicles registered with the California Department of Motor Vehicles.

DEF Delete

On the more modern Powerstrokes, another benefit to deleting the DPF systems is that you no longer have to buy urea to fill up the aux tank for the DEF system to run on.

With the 6.4L, it does not actually use a DEF type system so there is no need to worry about that in the first place, once you eliminate the DPF from the exhaust and flash the tune, you are essentially done.

Conclusion

Hopefully you now have a good idea of what it takes to remove these systems from your truck, and have a feel for what parts are the best for doing so.

As always, we would love to hear any questions or comments that our readers might have, so feel free to drop us a line in the comments below. Thanks for reading!

Welcome to our guide to lifting the 2007-2107 Silverado/Sierra!

Whether you’re looking to improve ground clearance, run bigger tires or just want to make your truck look better overall by lifting it, this is for you.

This guide will help you compare your options as we take a look at the most popular kits for lifting Silverados and just how they work to give your truck some altitude and attitude!

We’ll start with leveling kits that raise the front only, and then go over the options for even more lift, all the way up to some of the highest lift kits available.

Leveling Kits

As you can tell from this picture, from the factory these trucks have a forward rake to the way that they sit. It’s about a 2 – 2.5″ inch difference, meaning the front of the truck sits about 2″ lower than the bed.

If you’re looking to get rid of or reduce the factory rake, and make your truck look a lot more aggressive without compromising in ride quality, a leveling kit is what you want.

There are a few different ways to go about leveling your truck, and the following kits are the best ways of doing it:

2007-2017 Silverado/Sierra 1500 Leveling Kit

• Rough Country Spacer Leveling Kit

This kit by Rough Country is the best option for leveling the 1500. Made from durable delrin, it’s designed for longevity and corrosion resistance, which means you can rest easy knowing that it will probably outlast the rest of your trucks suspension.

The reviews show nothing but people that are happy with their purchase of this kit. On the rare occasion that anyone has less than stellar things to say, it usually comes down to an error during installation. Rough Country’s claims of easy install and 2″ lift are confirmed by multiple Chevy/GMC 1500 owners.

Rough Country (1307) 2" Front End Leveling Kit

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Features

• Give your GM 1500 the perfect blend of performance, protection, and style from Rough Country.
• Increase Ground Clearance for On and Off-Road Obstacles | Maintains Smooth, OEM Like Ride.
• Levels the Front with the Rear | No need to disassemble your Struts to Install.
• Easy at Home Bolt-On Installation, Supported by RC.
• Backed by Rough Country's Limited Lifetime Replacement Warranty.

Spacer Leveling Kit Installation

This picture illustrates where the spacer goes (spacer shown in blue.)

Installation is a breeze compared to most suspension lift kits:

1. Unbolt the two lower strut mount bolts and the sway bar.
2. Pry the lower control arm down enough to slip your new spacer in between the lower strut mount and the LCA.
3. Install the new longer bolts and torque to spec. That’s it, you’re done!

2011-2017 Silverado/Sierra 2500HD and 3500HD Leveling Kit

• ReadyLift 2.25″ Leveling Kit

The 2500HD and 3500HD Silverados will need a different type of lift for the front suspension, as these trucks are heavier and are designed to carry more weight than the suspension setup on the smaller and lighter 1500.

These trucks use a torsion bar type suspension setup for the front, which can actually be adjusted to lift your truck in stock form already, although cranking the torsion bars up with factory keys does make your truck ride rougher.

The reason to get a lift kit for this suspension setup is that while its possible you can adjust the ride height in a stock torsion bar setup, you are still limited in the range that the factory torsion bar keys allow.

This kit replaces the factory torsion keys with a set that moves the point of adjustability up the scale, so that your range of adjustment starts with a higher lift point at the minimum torsion setting.

These keys allow you to have a higher lift potential (up to 4in higher) all while maintaining the factory ride quality.

ReadyLift 66-3011 2.25" Leveling Kit for Silverado/Sierra 2500HD/3500HD 2WD/4WD 8 Lug

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Features

• Ideal for obtaining a level stance on your 2011-UP HD truck and maintain the factory ride.
• Torsion keys are forged for ultimate strength and powder coated for lasting corrosion protection
• Retains the OEM factory ride while lifting your vehicle to a level stance
• against manufacturer defects in materials and workmanship for the life of your vehicle
• Installs easily in about an hour - professional install recommended

3.5″ Lift Kits

If your goals area bit higher, like wanting to fit 35″ tires, then you’re gonna need to a lift kit that gives a little more height than just a front leveling kit would.

This is where a 3.5″ lift kit comes into play. The higher lift will give you the space that you’ll need in the wheel wells (with maybe some minor trimming) for larger tires up to 35’s, while also increasing your ground clearance over obstacles.

2008-2017 Silverado/Sierra 1500 4WD

• Supreme Suspensions – Silverado Lift Kit 3.5″

The best 3.5″ kit for the 1500 is this one by Supreme Suspensions. It has everything you need to lift without affecting ride quality.

It includes the lower spacers like you saw in the previous leveling kit, and adds a spacer for the top of the strut assembly, which gives you the extra lift. Splitting up the spacers like this is a very good idea, as you don’t want to have too much of a spacer on one end of the strut, as that would affect the suspension geometry.

The kit also comes with the blocks that you need for the rear lift to match the front, and the extended u-bolts that you’ll need when adding blocks to the rear leaf springs.

Also included is a differential drop kit, which keeps the front axles at a better angle, to prevent them from wearing out faster than they should.

Supreme Suspensions - Silverado Lift Kit 3.5" Front Suspension Lift + 3" Rear

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Features

• COMPATIBLE WITH 2007 - 2019 Chevrolet Silverado 1500 and GMC Sierra 1500 (6-LUG - 2WD 4WD). *Does NOT fit 2007 Classic / TrailBoss / AT4 Models, 2015+ vehicles equipped with factory stamped steel UCA, or 2019 models with 5/8 Rear Center Pin. This kit is NOT compatible with models equipped with Adaptive Ride Control / MagneRide / Auto-Ride / Air-Bag / Air-Ride, or any other Self-Leveling Suspension System.
• NOTE FOR Z71 / LTZ OWNERS: *Some LTZ/Z71 Models have factory rear blocks pre-installed! Rear lift height will vary depending on the size of the factory block being replaced by our lift blocks. Please check block size before ordering as our lift block is intended to replace any factory equipped blocks.
• TECHNICAL NOTES: 3.5 inch front and 3 inch rear suspension lift. *Please note that front spacer thickness to lift height is not a 1:1 ratio. IMPORTANT NOTE: Installation of Aftermarket Uniball UCA is highly recommended after lifting the front end by 2.5", or more. The upper ball joint will wear out rapidly with use of stock UCA.
• HIGH-QUALITY SUSPENSION LIFT KIT: Improves the look of your vehicle and increases ground clearance, allowing you to fit larger custom rims and tires. After an easy 2-4 hour installation* process, you're ready to feature your new and improved ride! *An alignment is always recommended if you are altering the height of your vehicle.
• LIMITED LIFETIME WARRANTY: All Supreme Suspensions brand products have been thoroughly tested before market release and are backed by or Limited Lifetime Warranty.

2011-2017 Silverado/Sierra 2500HD and 3500HD

• Tuff Country 2500/3500HD 3.5″ Lift Kit

This Tuff Country kit is the most comprehensive and best overall 3.5″ lift kit for the 2500HD and 3500HD Silverado/Sierra.

Included in the box is everything needed to maintain ride quality while allowing for a higher stance and larger tires (up to 35’s with some minor trimming.)

Tuff Country ensures that they produce a high quality kit by keeping the manufacturing in-house in the USA. They powdercoat all applicable parts for longer durability than cheaper painted parts. The limited lifetime warranty is another indication of how they stand behind their products.

The kit is designed for ease of installation, no cutting or welding is required, simply bolt on the replacement parts in place of the factory stuff.

Parts list is as follows:

• Heavy Duty tubular upper control arms with polyurethane bushings (corrects front suspension back to factory geometry even with the torsion lift)
• Torsion keys for maximum lift adjustability while retaining ride quality
• Cast iron leaf spring lift blocks for the rear suspension
• Extended U-bolts for the rear lift block installation
• Front shock extender brackets (shock replacement not required with this kit)
• Differential drop kit (keeps the axles from wearing out prematurely)

Tuff Country 2500/3500HD 3.5" Lift Kit

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Features

• Package Dimensions: 20.32 cms (L) x 35.56 cms (W) x 54.61 cms (H)
• Product Type: Auto Part
• Package Quantity: 1
• Country Of Origin: China

4-6″ Lift Kits

If the 3.5″ lift is just not enough for your truck, or you want to run even bigger wheel and tire combos, then you’re going to need a more serious lift kit.

4-6″ kits have much more ground and wheel clearance, but there are also alot more parts to replace when going this route.

Below are the comprehensive kits that include everything needed to give you the big lift that you’re looking for.

2014-2017 Silverado/Sierra 1500 4WD

ReadyLift 693414 Lift Kit

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Features

• Not for use with 2014-UP Z71 OFF ROAD with taller Rancho front struts. Standard Z71 (not Z71 Off Road) okay
• Extremely durable finish
• 100% Bolt-on for easy installation
• Includes a completely different differential drop mounting system with machined billet circular spacers
• Factory changes to the spindle/upright allows us to include the super strong heavy duty ball joints

2014-2018 1500 Silverado/Sierra 7″ Lift

Rough Country 6" Lift Kit (fits) 2007-2013 Chevy Silverado GMC Sierra 1500 4WD | V2 Monotube Shocks | Knuckles | 23670

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Features

• Give your Silverado/Sierra 1500 the perfect blend of performance, protection, and style from Rough Country.
• Unmatched Ground Clearance | V2 Performance Monotube Shock Absorbers | Leads the way, delivering Impeccable Ride Quality and Performance Mile after Mile.
• Anti-axle wrap rear blocks maintain stock ride quality and eliminates problems.
• Fabricated blocks are stronger and a longer lifespan than cast blocks.
• Backed by Rough Country's Limited Lifetime Replacement Warranty.

2011-2017 2500/3500 Silverado/Sierra 6″ Lift

Fabtech K1046DL RTS System

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Features

• LftKt-Suspw/Shock
• Raised Torsion Suspension Lift System

Conclusion

We hope this guide has helped you to decide which kit is best to buy for lifting your truck. If your have any questions, comments or concerns, feel free to reach below.

Thanks for reading!

Welcome to our guide for the LML Duramax EGR delete!

The aim of this guide is to compare the best ways of removing the EGR valve and cooler, which are part of the factory emissions system on your Duramax.

Speaking of emissions, the EGR removal goes hand in hand with deleting the DPF, and a lot of lml owners go for installing both kits at the same time in order to eliminate both of the failure prone emissions systems at once. Keep in mind however, these types of modifications are only for off-road trucks, or for countries without diesel regulations.

It’s a great way to kickstart your truck’s performance and efficiency. Let’s take a look at some of the benefits.

Benefits of an EGR Delete

The main benefit of removing the EGR system is that hot and sooty exhaust gasses will no longer be fed back into your intake, which has always been a problem when dealing with diesel engine longevity and efficiency.

This translates into lower intake temps. Your turbo will spool up faster and heat up your exhaust less, which means lower EGT’s. Your coolant will also be able to recirculate much faster, which means lower coolant temps.

You can expect to see an increase of a few MPG and HP after blocking off or removing the EGR system.

Duramax LML EGR Delete Kit

When putting together the parts for your EGR delete, you’ll have to consider which route you want to take with the kind of kit that you get. Basically, there’s an easier way to remove the EGR that takes about 3-6 hours to install, or there’s the full delete option that takes longer.

At the bare minimum, when removing the EGR on the LML you’re going to need some blockoff plates, hoses for rerouting the coolant and a tuner to edit the ECM.

If you don’t already have a tuner, take a look at the best options for the LML.

Once you have a tuner, the only other parts you’ll need for the basic EGR delete option are the block off plates and coolant lines, which are often sold in kits like these:

EGR/Cooler Delete Kit Options

• LML EGR Delete Kit 

LML EGR Delete Kit

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2011-2016 GM 6.6L Duramax LML EGR Delete Kit

Increases off the line torque and horse power. Completely replaces/removes the entire EGR system.

Enjoy quicker turbo spool and lower EGTs along with faster re-circulation of the coolant resulting in lower coolant temps. An EGR Delete capable race tuner is required in conjunction with this kit.

Installation Instructions

Click Here for directions on how to do the install for the block off plate and cooler removal.

If you’re doing it the easier way, you can skip the steps where you unbolt the downpipe and up-pipe. Instead, you simply install the up-pipe block off plate and keep the EGR portion of the up-pipe intact.

Full LML EGR Delete Kit

While the regular easier EGR delete is great for most people and will be sure to give excellent results, there are also those of us who are looking for a way to completely remove any unnecessary crapola from under our hoods.

This is where the full EGR delete kit parts package comes into play for the LML.

Be warned, doing it this this way requires a lot more work, but it’s the only way to go when you are trying to get the most out of your truck.

In addition to the block off plates, you’ll also want to get the following two parts in order to remove anything and everything associated with the EGR system.

EGR Delete Up-Pipe

• 

  CTCAUTO 116120000 For Duramax Heavy Duty 304 Stainless Steel Up-Pipes Gaskets Bolts Washers for 2001-2016 For GMC For Chevy For Duramax Diesel 6.6L

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  Features

  Part Number	102226-5242-0852151751
  Model	102226-5242-0852151751

LML Duramax Down Pipe

• 

  PPE 117000600 Performance Parts & Miscellaneous Accessory

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  Amazon

  as of September 13, 2023 1:20 pm

  Features

  • Easy and flexible to use
  • Package Dimensions: 59.055 H x 13.97 L x 17.145 W (centimetres)
  • Package Weight: 2.948 kilograms
  • Country of Origin : South Korea

More performance parts to consider

If you’re tearing your truck down far enough to do the full delete, there are some parts in the way that would also be good candidates for upgrading while you’re in there.

LML Duramax Cold Air Intake

aFe Power 51-74006-1 Momentum HD Performance Intake System (Dry, 3-Layer Filter)

Check Price
Amazon

as of September 13, 2023 1:20 pm

Features

• Outflows the factory intake by up to 52%. Produces an additional 22 horsepower and 57 lbs. x ft. torque max gains
• 3-Layer non-oiled, washable synthetic media for the perfect balance of performance, protection and convenience
• High quality one-piece housing with auxiliary air scoop
• Unique (Patent Pending) filter-to-housing interface for easy installation
• This product is not CARB exempt at this time and is not legal for sale in California or use on vehicles registered with the California Department of Motor Vehicles

Conclusion

Hopefully this guide has given you a better idea of how to remove the EGR system on your LML.

If you have any questions or comments, be sure to drop us a line below!