2021-2023 3.0L CHEVY/GMC LM2 DURAMAX | COMPLETE DELETE KIT | ECM SEND IN REQUIRED! | E66 ECM's ONLY

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Instructions
No installation manuals available for this product at this time. Request a manual here.
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Product Information

Product Description

2021-2023 CHEVY / GMC LM2 3.0L (E66 ECM SEND IN) COMPLETE DELETE KIT

We've officially launched tuning support for select GM platforms running the E66 ECM - including a range of 3.0L Duramax LM2 SUVs and half-ton pickups. With the proper setup, you can now unlock full calibration control, scanning capabilities, and strong performance gains on late-model diesel platforms.

MUST CHECK ECM! IF E46 PLEASE SEE OUR OTHER OPTION!

Supported Vehicles

  • 2021-2023 Cadillac Escalade 3.0L Duramax LM2
  • 2021-2023 Chevrolet Suburban & Tahoe 3.0L Duramax LM2
  • 2022-2022.5 Chevrolet Silverado 1500 3.0L Duramax LM2
  • 2022-2022.5 GMC Sierra 1500 3.0L Duramax LM2
  • 2021-2023 GMC Yukon 3.0L Duramax LM2

From cleaner shifting and reduced throttle lag to optimized towing performance and improved responsiveness - the difference for your customers is immediate. This isn't Just ECM access it's full control over how their vehicle performs day to day.

WHAT IS INCLUDED

  1. Prepaid Send-In ECM Upgrade 
  2. GDP E66 Tune File 
  3. Tuner Interface - Flash it like the Fourth of July.
  4. Credits - Used to license the ECM post-upgrade
  5. LM2 Canbus Plugs.
  6. FLOPRO DPF delete pipe. 


    EGR Delete Kit. (MUST be added via menu buttons or not included!)
    S&B Cold Air Intake (MUST be added via menu buttons or not included!)


    ATTENTION!
    NEW RELEASE ITEMS AND WE DO NOT YET HAVE MANUALS INCLUDED! ALL MUST BE DONE WITH GDP TECH SUPPORT!


ATTENTION! (INCLUDED - WE PAY SHIPPING + SEND LABEL TO YOU!)
ECM MUST BE SENT IN. 

3.0L Duramax EGR Delete Kit (MUST BE ADDED ON VIA MENU BUTTONS)

Kit Includes:

  • High Quality 4 Ply Silicone Coolant Hose (1x) and Caps (2x)
  • Ground Cable (1x)
  • Blocker Plates for the EGR Valve and Cooler (2x)
  • Intake Plug (1x)

This kit allows the removal of the EGR cooler and valve, exhaust valve, and EGR Cooler Pipe.

EGR Cooler and Valve Removal: 
The LM2 3.0L Duramax EGR Delete Kit is engineered to eliminate the restrictive EGR cooler and valve, liberating your engine from the limitations imposed by recirculating exhaust gases. By removing these components, you enhance airflow and prevent the build-up of carbon deposits, leading to a cleaner and more efficient combustion process.

Exhaust Valve Elimination: 
Bid farewell to the exhaust valve, a component prone to carbon buildup and reduced functionality over time. With the LM2 EGR Delete Kit combined with the race pipe, you eradicate this potential source of engine inefficiency, promoting smoother operation and prolonging the life of critical engine components.

EGR Cooler Pipe Blockage: 
The kit includes a solution for blocking the EGR Cooler Pipe, preventing the unwanted recirculation of hot exhaust gases.

*Professional installation is strongly recommended, as essential engine bay components need removal for the OEM system extraction.

FLOPRO 3.0L Duramax Cat and DPF Delete Pipe

*Professional installation is strongly recommended, as essential engine bay components need removal for the OEM system extraction.

Fabricated from durable 16-gauge aluminized steel, this exhaust system exhibits a precise fit, facilitated by machined flanges and lap joint style clamps. Unlock heightened performance, reduced exhaust gas temperatures, and improved air-flow using this system, all while indulging in its authoritative sound.

Uses the existing Muffler

Powerlevel Options

Product Compatibility

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Received everything very quickly!

Greg

Rinkes

Great kit, very satisfied with the quality and performance and your customer support is fantastic, thanks for making the 6.7 run and sound great

Tim

Hans

If I could give you guys a 10-star review I would I've also reached out to a lot of my friends that also drive diesels and forwarding your guys's information to them so that they can purchase the delete kits also a couple of my friends have fleets of trucks so they will be in contact I appreciate you guys thanks for being awesome

Ian

Lewis

Works awesome. Thanks I appreciate you.

Don

Allison

Will give these guys a 5 star plus! Thanks for the discount and quick shipping. Highly recommended.

Neil

Mayes

Ordering process was great and everything arrived quickly and intact. The GDP tunes seem decent although there is some smoke on level 1 where I wouldn't think there would be any. Overall very satisfied with the product.

C

Gilliam

Excellent service and parts... Fast shipping!

Jonathan

Coo

Works great nice setup

Cristian

Larios

Well let's just start this out by saying I have a 16 ram 6.7 and I ordered the ezlynk with the LION package shipping was very fast and everything was complete I deleted my rig it took a complete weekend because we had a little hiccup with the ezlynk not hooked to a technician but as soon as GDP opened the problem was completely fixed the five position switch was perfect and everything functions great the tip for the 5in exhaust is completely over the top but as a dump would look great I'm very pleased with the tunes just took my camper on a 80 mile journey and have ZERO complaints now the truck is a beast I highly suggest you go with DIESEL LION for the simple fact that it was very easy to install and use ...... on a side not I do also recommend headstuds!!!! Definitely worth it THANK YOU DIESELLION.COM for everything I will be sending business your way with all my friends

Casey

S

Packages arrived and in good shape. When I had any questions someone would follow up with an answer. My RaceMe Ultra was easy to install and had no problem with the EGR delete kit. I did have a problem with my pipes due to the bend in the pipe that replaces the muffler. Only 2 ways I could put it. The bend up or down would not let me hook up my hanger mounts for support.

Geoffrey

Rose

I would just like to say thank you for such a great system your team sold me. I had everything I needed and made this kit installation go very smoothly. I was very nervous going into this, my boys kept telling me it will be fine. The Agent 3 device was such an easy install it was crazy. Everything connected very easily and meshed well with my Banks equipment I added with it. When I have heard folks say it will wake up your truck, I had no idea until I started driving it. Completely different truck. Thank you for supporting this equipment and making this high value upgrade a smooth one. I definitely am spreading your name out there.

Gary

Morrison

The product worked perfectly, solved all my problems. Thank you.

Michael

Gilbert

You guys are great! ")

Betty

Sutherland

19% Better MPG. Sounds like a REAL diesel. Great communication.

Will

S

Everything in the kit ordered worked great! I am a happy customer and will likely purchase again!! Thanks for the great products. Thank you for your time.

Tony

Russ

The best product and excellent customer service!

Jeff

Boudreau

Awesome! Install wasn't too bad on 2017 Ecodiesel Ram 1500. Truck is much more responsive and should last longer now that I am no longer spewing carbon into my intake manifold.

Daniel

Johnson

Yes very happy with both my orders

Nicholas

Estes

Everything went well. Took me 4 hours to complete, solo. Only gripe I could have (which I don't) would be the lack of instructions for the bracket that bolts to the exhaust. Took me a while to figure that out as the instructions showed a different set up. Preciate the kit. Have recommended to other folks.

Cordy

DD

finally got it done. amazing power difference and I think the fuel economy will be better when I get through playing with it.

Clayton

Keenan

This kit was the best thing for my truck it like a brand new truck run so good an is bad ass fast now thanks again for great kit an service

Jeff

Watkins

THANK YOU!

Shane

Very pleased with everything I got everything went pretty smoothly and is working great! Thank you guys! Would definitely shop again or suggest to others. Only complaint is on the 5-in downpipe it is a rather tight fit and kind of touches the frame there maybe a slight Factory dent or something

Jude

Gray

Awesome products at an amazing price. Everything was so simple to install and program. I would highly recommend your product to everyone

Charlie

Clonch

Very happy with my purchase great products thank you and I loved how fast it arrived thanks again

Peter

Rodriguez

Five stars, very responsive!

Nelson

Merced

Works great thanks

Tyler

Birtciel

Everything worked perfect, on time, and you even answered an email overnight!!! You got my 5 Stars guys!!! 👍 Thanks for a great product!

Jeff

Delk

Yes 😊

Darrell

McKittri

Great so far seems to be exactly what yall described thank you

Marty

Waggo

So far it has done great!!!! Not hard to install

Darin

Ladlie

THIS WORKED AS IT SHOULD-NO PROBLEM INSTALLING -THANKS

Mark

Camarra

So far so good

Jeff

Jordan

I am stoked! Thank you ALL for being a part of the solution. It burns me up to know the amount of great engines out there being ruined by the ridiculous laws and science being forced on great Diesel engines. No doubt about it, there are less than a handful of un-needed factories blowing more pollution into the world than ALL of the diesel engines combined. Thank you again for all you do! God speed.

Mike

Thompson

A highly recommended group of people. WIlling to help on what would normally be out of business hours. I'll be coming back for their help in the future.

David

Finn

Great product will be ordering more very soon!

Jaron

Hastings

Works as it should. Quick shipping

Chris

Quacken

Yes I'm very happy with the kit I got it in and it's working great.

Jim

Jones

You did a great job 🤙

Oliver

Large

Small issue with shipping on time but 5 stars

Richard

Parks

Your service was awesome, I was amazed how fast my order was shipped and the customer representative was very helpful. Thanks again, Steve in Colorado

Steven

Allard

Everything worked out perfect, instruction very accurate

Cruz

Tovar

These guy(s) are great! Knowledgeable, friendly, helpful. Highly recommended.

Ken

Kilby

Truck runs like a scalded dog! Had issue with muffler not being sent with original order and had to switch to EZ link tuner. Other than than N that, very pleased

Carlos

Martinez

I am really like y'all customers Servies Very helpful.

Rodrigo

Luna

The truck is running pretty good now thanks to your tunes and email help. I ran the 60hp tune for a few days then loaded the 100hp. Ran a tranny learn session out on the interstate immediately after the flash. Truck runs better on the 100hp than the 60hp tune in my opinion. No rolling coal, just a little "coal dust" when accelerating. The mileage is fantastic compared to what it was getting before the turbo replacement and tuning. It was 13-14 mpg before the swap. Now running the 100hp tune, I'm getting 21-22mpg. Unbelievable! On a fresh refuel, I reset the mpg display on the truck. The first 125 miles saw 22.5 mpg! After five days of mixed driving, it was still holding 21.8 mpg. Now, the big question is: How accurate or valid is the PCM calculation and display? Who care? Before it was reading 13-14 m mpg. Now it's showing 21.8 mpg. That makes me happy and that a good thing. I will run a manual calculation when I refuel again in a few days to cross check. Thanks again for your help and patience.

Ken

Kilby

The kit was just what I needed. The only thing is there one of the hose connections that is plastic and should be metal. I swaped it out with a metal one and all is good. Thanks for shipping the kit quickly.

Chad

Loker

Happy

Karl

Patay

Product was great. Easy installation. Great improvement over stock.

Ron

Pontius

Everything worked out perfectly. Super happy.

Rian

Mckinnon

Everything went good on the install

BJ

Putman

Absolutely amazing customer service and shipping. Have told several people to do business with you. Couldn't be happier. 5 stars all the way

Philip

Triplett

Awesome Great job 👏

Jeff

Cooper

My order was shipped right out and I received it quickly. I am very pleased with your service and product. 5 stars!

Chris

Paul

Thanks y'all Done great

John

Rodge

Great company to work with. I had a problem with my order and they took care of it right away. I would recommend them to all my friends.

Dave

S

The service that was provided was phenomenal. Couldn't have asked for better service. Placed my order and arrived on a timely manner taken into account I live in Louisiana. Truck sounds great. Thanks again.

Josh

H

Great job as always! Fit perfect and fast shipping! Thanks!

Chris

Taunton

Install went awesome, instructions were good and everything went smoother than expected. Thank you.

Anonymous

A PLUS. Everything was perfect. Tunes work as they should. Drivability is better than factory programming. Very happy and will buy from again.

Keith

Weston

I like it, the install wasn't too bad. Wish it would've came with instructions, that would make it a lot better.

Marcus

Moore

Yes, I am definately happy with the products and services I purchased from you! The shipping was fast and secure, arriving within 5 days of ordering. Thank you for a great shopping experience, I have several friends looking for similar products and services, and have directed them towards your company. Thanks again for everything-

James

Dean

Great service. Fast shipping. Great product. Will do business with you guys again!! A++

Joe

Caddick

%100 great service awesome timing on parts!

Jesse

Ward

Everything fit and is working very well. Order was delivered faster than expected. Would recommend this kit to others.

Marland

King

I love all my products and my truck runs great

George

House

Incredibly happy runs way better mileage increased and muffler with 4" exhaust is perfect. Thanks again

Anthony

Guilian

Hats off to diesel lion. I purchased my 6.7 ford tuner approximately three weeks ago I received my tuner within three days of ordering, which was fantastic. Wasn’t expecting it for a week to a week and a half. when I received it, I opened up the box to see what came with it and noticed the gauge wasn’t in the box was planning to put it on the upcoming weekend was very disappointed at the time. I thought I was gonna have a heck of a time trying to get a hold of them and resolve the issue I first called them no answer then email them got an answer with an hour after hours. I sent them photos of what I received in the box and the person that have been talking to said he would send me one out, I thought well it’ll be another week or two before I received it. I got it within two days again very very happy with their response and concern they sent me a whole new unit very appreciative to diesel lion the way they handled it very very happy with them. Long story short if you need to order tuners or anything and need good service order from diesel lion they will take care of you. Thank you again diesel lion. If there’s anything else I need I will definitely order through them. Thanks again Cardel Howell.

Cardel Howell

Howell

I am very pleased with my purchase!! The only thing I wish I would have got was the pyro that goes with it. I'm saving now so I can purchase that in the near future. Thank you so much!

Mark

Lujan

It was great so far so good 👍

Robert

Stuart

I want to thank you for your time and patience. Dino diesels is truly an outstanding company. I will definitely recommend you guys when ever I can. Thanks again.

Lance

Benner

Everything went well. Thank you very much

Tom

Honrath

Everything I needed was in the kit I was very happy with Everything except the shift on the fly selector. I spent 2 hours installing it in a very inconspicuous location. After I installed it we could not get the proper voltage reading for it to work correctly with my truck. So now I have it still mounted in my truck but I had to unhook it so it was a $150 item that I won't be able to use. But everything else worked very well and I am pleased with the outcome of the installation. Thank you for your products. Will be purchasing more form your company in the future

Bobby

Holt

good tunner worked the way they said.

Bat

Excellent!!!!! Everything worked out perfect

Mitchel

Johnson

Great!

Don

Peters

Thanks for the promoptly sending my order. Everything fit great. I'm totally satisfied!! Thanks again!

Darrell

Blackw

I'm so happy with the parts and I'll definitely keep buying them for you guys. Thank you.

Nestor

Bueno

Yes I was very happy.

Lewis

Drywall

EFI Live easy to work with! fast shipping! Thank you

CHRIS

SWAIN

Everything works great and the whole process was much more simple than I expected. I will definitely be recommending you to others. Thank you!

Brent

Kramer

You guys are lifesavers , everything thing went together perfectly, runs and shifts better than ever and it was delivered the same day I ordered it. You gained a loyal customer and I appreciate the entire process, thanks again

James

Crimm

Yall did great! Fast service and overall great experience!

Travis

Puryear

Thanks for selling these kits! My truck runs like a champ. It was super easy to update the SCT and flash the ECU. I was a little worried but there was good instructions!

Angel

Proven

Hello, your kit worked awesome. No issues at all. Truck runs great. Thank you

Sun

Man

So far exactly what I want to achieve, smooth, no surging, trans is solid. The delay between the 3rd and 4th is a bit long. I was hoping for an earlier shift.

Mike

G

I just finished installing the RaceME Ultra and complete EGR, exhaust system kit. This woke my truck up like never before and it runs great. Technical support was a great help and Michael answered all my questions in a timely manner. Looking forward to many miles with no check engine lights. Thanks again for all your help.

Doug

Miller

Everything came in and seems to work just fine. Thanks

Greg

Rinkes

Great company to deal with will definitely use them again

mkhot

shottra

Great product, had everything I needed. Installation went great, got it all done myself in my garage in about 6 hours. Truck runs awesome with engine and trans tunes.

Andy

Kosevich

Worked great

Kenzie

Trucking

I pull a 48ft car hauler with my 2014 Ford 1ton, 5.9mpg and the truck would overheat. Installed the delete kit, no more overheating 12.8mpg. AWESOME THANKS

Bryan

Aaron

Worked great! The kit had everything I needed to fix the issue.

Tommy

Johnson

You did very well thank you so much.

Terry

Conk

Product was not really compatible with the C/C as turbo is smaller so GDP will only give me 1 tune. I understand why but, I bought the 5 position switch was so I could adjust power as at times I do not tow and others 30k lbs. Other than that like the tune and GDP tech line was very, very helpful So can't use the 5 position switch but will keep until I install a larger turbo as per GDP. Thanks for the product and it really sounds like a truck now.

Bill

King

Yes really good love it

Juan

Bravo

Great!!!

Doug

Candler

I am extremely happy with my product I ordered. Easy installation and everything was well packaged.

Ray

Moyer

Awesome company, great products/tunes!! Very fast customer service!

Brock

M

Very happy with everything 5 stars

Kelly

Hatfield