What Does EGR Delete Do On The LML Duramax?


The Duramax LML EGR delete kit is a kit that allows you to remove the exhaust gas recirculation (EGR) system from your truck. The EGR system is designed to reduce emissions, but it can also cause your truck performance problems. Removing the EGR system can improve your truck’s performance and fuel economy.

In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide (NOx) emissions reduction technique used in petrol/gasoline and diesel engines. EGR works by recirculating a portion of an engine’s exhaust gas back to the engine cylinders.

Is it good to delete a LML Duramax?

Duramax LML DPF Delete Summary

The only remaining emissions system on your GM truck will be the EGR system. DPF systems are prone to clogging, and the SCR/DEF is already a common failure item on the LML. Therefore, deleting these systems can lead to more reliability and a lower likelihood for expensive repair bills.

Does EGR delete increase horsepower Duramax?

Contrary to what most performance-minded Duramax owners believe, the EGR doesn’t affect horsepower, and it plays an integral role in maximizing both engine life and fuel economy.

How much does it cost to delete an LML Duramax?

For a full delete, you will need exhaust ($400) tuning ($690) PCV reroute ($50) and Blocker Plate ($12) or new Y bridge and cold side ($700 or so).

What is the point of EGR delete?

An EGR delete kit is an aftermarket performance part that removes the EGR valve and prevents exhaust from being redirected back to the engine. Ultimately, this allows your vehicle to function as if it never had an EGR valve.

What does EFI Live do for Duramax?

Available for ’01-’16 Duramax-powered GM’s and ’06-’16 Cummins mills, EFI Live makes it possible for the end user to electronically infiltrate the factory ECU and TCM to access and alter data. No other tuning platform allows you to view and change so many different parameters.

Can you delete DPF without deleting EGR?

Yes, just the EGR delete is important

Deleting the DPF will increase mileage and improve overall performance, but it doesn’t keep the engine cleaner. Personally, I think blocking off the EGR is more important than deleting the DPF, if you care about the engine.

Should I delete def system?

The catch about a DEF system is that you have to keep its fluid reservoir filled regularly to keep it functioning properly. This doesn’t just take time – it costs money, too. Deleting your DEF system can help save you money. Plus, your exhaust might have a bit of a beefier growl once you’re done.

Can you delete def on a Duramax?

A DEF Delete Service for your Cummins, Duramax, or Powerstroke diesel engine from Revolution Motors will remove this system so your truck is running at peak efficiency and performance. Trucks with the DEF delete install can improve fuel efficiency by up to 30%.

Will EGR delete hurt engine?

What some people don’t realize is that yes, deleting an EGR system can help prevent some expensive repairs. But they can also cause major problems in other parts of your engine.

Will EGR delete cause black smoke?

Q: Will EGR delete cause black smoke? An EGR system delete will not cause black smoke because it doesn’t involve incomplete combustion.

Will EGR delete throw a code?

If you have an FE9 truck and block the EGR it will not throw codes. If you actually delete and unplug everything it will throw codes. On the Edge, in the menu there is a Diagnostics selection. Inside of that you will see options to View DTC (Diagnostic Trouble Codes) and you can clear them from within the same menu.

How much does it cost to do a EGR delete?

8. Typically costs as much as the EGR valve. If you decide to install an EGR delete kit, you can expect to pay around $200, and the cost could run up to $1,000, including the cost of installation. This price is almost the same amount you would pay to get an EGR valve replacement.

Can you bypass def system?

If you’re thinking of bypassing any of your diesel’s emission controls, remember that that it’s highly illegal and the fines can be steep. The chances of getting caught may be low, but the consequences are costly.

How much does a DPF Delete cost?

How Much Does A DPF Delete Cost? Prices and service times vary on the type and year of the unit and the extent of the delete but roughly range from about $3000 to $10,000. This cost is often either the same or less expensive than replacing the after-treatment systems upon failure.

How much HP gain from EGR delete?

You can improve your fuel efficiency with an EGR delete.

You may see up to a 20% increase in your fuel economy when using this product option while promoting improved longevity of the engine at the same time.

What happens if you get caught with a deleted diesel?

The fines can quickly get out of hand, as the EPA has the right to assess civil penalties of $37,500 per day for significant issues and up to $7,500 per day for minor ones.

Is EGR delete illegal?

An EGR delete is NOT the end all solution that most claim it to be. An EGR delete is ILLEGAL in ALL 50 STATES. All vehicles are required to meet federal emissions standards. The penalty for an emissions component alteration can be in the thousands of dollars.

Will EFILive delete EGR?

Yes on the delete with efi. However, you can’t use ur stock file that’s in the truck. Reading out the stock file after a smartly (with it removed and returned to stock) will give u your os and allow u to locate a clean os. Do not use the stock file after a smartly has been on the truck.

Is EFILive worth the money?

EFIlive and a straight pipe alone won’t net tons of MPGs, maybe a couple. But the more you do, the more tenths of a mpg you can pickup. EFIlive will drastically improve the driveability of your truck, add in a turbo brake and even better. An EFIlive duramax is a totally different beast than a stock one.

What are the 5 tunes on EFILive?

It includes 5 custom tunes for a DSP5 switch so that you can switch between tunes while driving. Our tunes are opt.stock, tow (w/ turbo braking), street, hot and race. Please specify in the stated area if you want any other specific tunes.

Will removing EGR affect DPF?

The EGR Valve should NOT be removed on vehicles that still have the DPF Filter in place, doing so may block the DPF as the EGR Valve operation is a prerequisite for DPF Regeneration.

Does removing DPF increase power?

Because DPFs and EGRs obstruct your exhaust and dilute the air/fuel ratio in your engine, removing them may help to increase your engine power.

Is DPF Delete legal?

It is illegal for drivers to use a car with the DPF removed, but it is not illegal for garages to take them out.

Is deleting your diesel worth it?

To put it bluntly, no, you should not remove the emissions equipment from any diesel pickup. Regardless of local and state testing requirements, it is a federal crime to remove any factory installed emissions equipment. Removing emissions equipment also voids the vehicle’s factory warranty.

Can you pass emissions with a deleted diesel?

Can You Pass Emissions With Dpf Delete? The bypass of emissions regulations used to be possible for diesel cars with DPF deletes. But now it is much more difficult. No matter what country you own or how far you travel, a Diesel that has been disabled will now have an outstanding emissions test.

Is it illegal to delete DEF system in Texas?

You may remove an emission system or device at any time if you are replacing it with one that is specified for that vehicle and is equally effective in reducing emissions.

How many miles does a Duramax last?

If you want to know how long a Duramax engine will run, you should expect it to last as much as 300,000 miles before needing any major repairs. But, of course, this number can vary depending on how well the engine was maintained and driven throughout its life.

What happens if I delete my DEF system?

DEF Delete

Just like the DPF, the system will clear out excess soot by going into a regen cycle and using your vehicle’s fuel to burn off and blow out the soot. The DEF can also reduce performance and fuel efficiency but can also cause issues with the system freezing up.

What is an LML Duramax?

The 6.6L V8 Duramax LML is an engine that was produced by General Motors for full-size heavy-duty (HD) pickup trucks. Displacing 6.6 liters in a V8 configuration, the LML is part of the Duramax family of heavy-duty workhorse engines.

Does EGR delete increase mpg?

Deleting your EGR will improve your mpg, bit the difference is so little it will be barely noticeable. But if removed you will avoid the carbon buildup in your intake manifold, ant that can make a rather noticeable difference.

Is it OK to bypass EGR valve?

Removing the EGR valve will certainly remove a component that requires regular maintenance, but it will make your car less efficient, as well as committing a detrimental offence both to the environment and to other drivers and road users.

Will an engine run without an EGR valve?

It might affect the environment but it is not harmful to the engine. Some people are running for more than 50k km without EGR. The EGR is disabled in all remapping.

How do I turn off the check engine light after EGR delete?

Do You Have To Reprogram After Egr Delete? It may cause an engine light to turn on after removal or blocking, allowing error codes to be applied. These issues can be addressed by installing a new tuning program or delete kit on the old ones. Newer vehicles need reprogrammings and reinstalling an old delete.

What are the symptoms of a failing EGR valve?

What are the symptoms of a failing EGR valve?

  • Your engine has a rough idle.
  • Your car has poor performance.
  • You have increased fuel consumption.
  • Your car frequently stalls when idling.
  • You can smell fuel.
  • Your engine management light stays on.
  • Your car produces more emissions.
  • You hear knocking noises coming from the engine.
  • What is a deleted diesel engine?

    In simple terms, the deletion of diesel entails removing one or both of the equipment used for emissions control. Similarly, the diesel particulate filter (DPF) or selective catalytic reduction (SCR) system can be removed quite easily if only a replacement exhaust system is required.

    Can you pee in your DEF tank?

    Please do not urinate in your DEF tank, the SCR system will be damaged and it will cost thousands of dollars to repair. Here at Transliquid Technologies we specialize in providing the best quality of Diesel Exhaust Fluid.

    What happens if you run a diesel without DEF?

    If you ignore the DEF warning the truck will cease to work. Some diesel engine manufacturers allow the engine to go into reduced power mode so the truck can “limp home” or limit the number of times you can turn the engine over. At some point though the diesel engine will not start.


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