OBDii FLASH TUNER DELETE Kit | 2017-2023 CHEVY / GMC L5P AND L5D DURAMAX

2017-2023 CHEVY / GMC DURAMAX L5P / L5D 6.6L

Upgrade Packs
STAGE 1 | THE CUB | BEGINNER FULL DELETE KIT
STAGE 2 | THE YOUNG LION | VALUE DELETE KIT
STAGE 3 | THE KING OF THE JUNGLE | ULTIMATE DELETE KIT
Add To CartBuy Now
Free Shipping on all Ground Orders!
Thank you! Your order has been received!
Oops! Something went wrong. Please try again.
Shipping

We offer fast and free reliable shipping for all customers to ensure that you receive your products as soon as possible. Shipping generally takes 3-8 days to transit to you depending on where you're located in the US and Canada. Hawaii, Alaska, and other remote areas may take longer and invoke further shipping expense. Please contact us if you're want more information.

Returns

We understand the importance of clarity in our return procedures, both for our customers' peace of mind and for ensuring a smooth process. We've outlined our updated guidelines to facilitate efficient returns here.

On Sale!
Recommended Add-ons

Complete your kit with these upgrades!

Add-on | Cab Chassis

USD299.99
USD299.99
Don't Add
Add
Why would I want this?

Drivers' door vin stamp will say "incomplete vehicle" if you have a cab chassis truck. Cab Chassis Trucks take specialty SCR & DPF Delete pipes along with specialty EGR Delete kits. This upgrade is included if you select this option.

Recommended
Bundle & Save!

DUAL 5 INCH EXHAUST SYSTEM | 2017-2023 CHEVY/GMC L5P DURAMAX

USD999.99
$699.99
USD999.99
Don't Add
Add
Why would I want this?

Recommended
Bundle & Save!
Choose Your Upgrades
Buy Now
USD2,699.99

Product Information

Product Description

2017-2023 CHEVY / GMC L5P AND L5D DURAMAX 6.6L PICKUP AND CAB CHASSIS 2500, 3500, 4500, 5500.

 

STAGE 1 | THE CUB | BEGINNER FULL DELETE KIT

We call this THE CUB because it deletes all 3 basic things you need deleted: DPF, DEF, EGR & CAT. This is all that is needed to get your truck fully deleted without any of the frills or add-ons. If you want something more advanced and/or performance oriented look at STAGE 2 or STAGE 3 below. 

STAGE 1 Includes:

  1. OBDii Flash Delete Tuning Interface
  2. GDP Single delete tune of your choice.
  3. CAN BUS Plug Kit
  4. 8 CREDITS (Required and included)
  5. DD E41 ECM Upgrade Kit (Unlock your ECM right in your truck)
  6. T409 stainless steel DPF delete pipes. 

    IF YOU WANT TO ADD A DOWNPIPE CLICK HERE.
    IF YOU WANT TO ADD A EGR DELETE KIT CLICK HERE.
    IF YOU WANT TO ADD AN INTAKE CLICK HERE
    IF YOU WANT TRANNY TUNING ADD IT VIA THE MENU BUTTONS.

    STAGE 2 | THE YOUNG LION | VALUE DELETE KIT

    We call this The YOUNG LION. While scary enough to get the job done, it won't quite scare your local Liberal the same way as when you step on it with our KING OF THE JUNGLE kit. This is where value meets affordability. This Complete DPF/DEF/EGR Delete kit is for those that want the best of both worlds, Power & Reliability. 

    STAGE 2 Includes:

    1. OBDii Flash Delete Tuning Interface
    2. GDP Multi tune or SOTF tune package. (Shift on the fly via steering wheel buttons)
    3. CAN BUS Plug Kit 
    4. 8 CREDITS (Required and included)
    5. E41 ECM Upgrade Kit (Unlock your ECM right in your truck)
    6. EGR Delete Kit.
    7. 4 inch complete exhaust. (T409 stainless steel)
    8. Black/Chrome T304 stainless steel exhaust tip.
    9. T304 stainless steel Downpipe. (Delete the CAT in factory downpipe)

    IF YOU WANT TO ADD AN INTAKE CLICK HERE
    IF YOU WANT TRANNY TUNING ADD IT VIA THE MENU BUTTONS.

    STAGE 3 | THE KING OF THE JUNGLE | ULTIMATE DELETE KIT

    We call this the THE KING OF THE JUNGLE! This DPF, DEF & EGR Delete kit includes everything needed to turn your Diesel Truck into the Ultimate Diesel Powered Animal. Your Tesla driving neighbor just might start taking Testosterone Supplements once you pull up in THE KING OF THE JUNGLE!

    STAGE 3 Includes:

    1. OBDii Flash Delete Tuning Interface
    2. GDP Multi tune or SOTF tune package. (Shift on the fly via steering wheel buttons)
    3. CAN BUS Plug Kit
    4. 8 CREDITS (Required and included)
    5. DD E41 ECM Upgrade Kit (Unlock your ECM right in your truck)
    6. EGR Delete Kit.
    7. 5 inch t409 stainless steel exhaust.
    8. Muffler. (Leave comments if you want to skip on the muffler)
    9. Chrome/black exhaust tip. 
    10. T304 stainless steel Downpipe. (Delete the CAT in factory downpipe)
    11. S&B Cold air intake. 

    IF YOU WANT TRANNY TUNING ADD IT VIA THE MENU BUTTONS.

    *This is a custom tuning kit with Custom tunes and cannot be returned.

    **In order to get GDP tunes you must fill out the tune order form. This takes 3 to 5 business days to get the tunes. You will login (with the supplied login info that will be emailed to you once you submit the form) and download the tunes at tuning.tech

        Powerlevel Options

        AVAILABLE HP LEVELS

        LEVEL 1 = 0HP (STOCK & HEAVY TOW)

        LEVEL 2 = 50HP (LIGHT TOW)

        LEVEL 3 = 80HP (LIGHT TOW & PERFORMANCE)

        LEVEL 4 = 120HP (STREET & PERFORMANCE)

        LEVEL 5 = 190HP+ (RACE)

        TUNE INFO

        HEAVY TOW

        -No added RWHP, + 100 ft-lbs torque over factory.

        -This tune is for those towing from 8,000 lbs up to max GVWR. (Gross Vehicle Weight Rating)

        -Wider torque curve assists heavy loads

        -Perfect tune for maximum longevity and reliability.

        -Exhaust temperatures drop up to 100F under full load

        LIGHT TOW

        -For those towing any load up to 8,000 lbs.

        + 50 RWHP, + 200 ft-lbs torque over factory

        -Designed for weekend tower, boats, small tractors, etc

        -Perfect balance of sport driving & functionality

        -Unhook and enjoy a sportier drive

        ECONOMY/SPORT

        -Fun “unloaded” daily driving

        -For driving around town, highways

        -Impress your friends

        -Put a smile on your face

        + 80 RWHP, +300 ft-lbs torque over factory

        -Puts your vehicle near the 550 RWHP mark"

        HOT STREET

        -Bridge between Sport Economy and Race

        -A little more aggressive than Sport Economy

        -Behaves nicely on the street

        + 120 RWHP, +400 ft-lbs torque over factory

        -Puts your vehicle near the 580 RWHP mark.

        -Race / Max Effort Tune

        -Maxes out the factory Turbo.

        + 180 RWHP, + 500 ft-lbs torque over factory

        -Puts your vehicle  to about 600 RWHP 1360 ft-lbs.

        -Up to 620 RWHP / 1380 ft. lbs with WC Fab turbo mouthpiece.

        TCM TUNING RECOMMENDED FOR THIS LEVEL.

        Product Compatibility

        Chevy / GMC
        Duramax
        2017-2023 L5P/L5D

        2017-2023 CHEVY / GMC DURAMAX 6.6L PICKUP AND CAB CHASSIS

        Other Information and Resources

        Satisfied Customers

        Hear what our customers have to say about our diesel parts.

        There aren't any reviews for this product yet. Be the first! Leave a review here.
        Offroad Recommendations

        Other Great Buys

        Check out some other products that you might like

        On Sale

        EZ LYNK DPF DEF EGR DELETE KIT | STEALTH TUNES | 2017-2023 CHEVY / GMC DURAMAX

        2017-2023 CHEVY / GMC DURAMAX
        Bundles
        USD1,999.99
        true
        Apr 02, 2026
        On Sale

        2020-2026 Ford Powerstroke Full DPF DEF EGR Delete Kit | EZ Lynk Tuner with ECM TCM & SOTF Tunes

        2022-2026 Ford Powerstroke
        Bundles
        USD1,999.99
        true
        May 03, 2026
        On Sale

        ECM send in DELETE Kit | 2019-2023 JEEP WRANGLER ECODIESEL

        2019-2023 JEEP WRANGLER ECODIESEL
        Bundles
        USD3,699.99
        false
        Dec 17, 2025
        Product Name
        Product Note
        Selected Variants
        Subscription Title
        Product Discount (-0$)
        CODE (-0$)
        $0
        $0
        Thank you! Your submission has been received!
        Oops! Something went wrong while submitting the form.
        Your Cart Is Empty
        Success message won't be visible to user. Coupon title will be listed below if it's valid.
        Invalid code
        CODE
        Subtotal
        $0
        Order Discount
        -$0
        CODE
        -$0
        Total
        $0
        Checkout
        Yes very happy with both my orders

        Nicholas

        Estes

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

        CHRIS

        SWAIN

        Great kit. Truck runs great. I went from 16.2 highway mpg to 19.9 highway mpg. The kit did not substantially increase exhaust noise, the truck is still quiet for a diesel. I am very pleased. I can now go down to grand isle fishing and not have to worry about my truck saying in 50miles your truck will only go 50 mpg. What a relief!

        Steven

        Unkel

        Yall did great! Fast service and overall great experience!

        Travis

        Puryear

        Great product will be ordering more very soon!

        Jaron

        Hastings

        Works great nice setup

        Cristian

        Larios

        Yes really good love it

        Juan

        Bravo

        Initially hesitant about deleting, I found that it turned out to be the best thing I could have done. As a result, I no longer experience exhaust service lights, and there is no lagging when I step on the accelerator. Additionally, I have noticed an increase in fuel mileage.

        Adam

        B

        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

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

        Will

        S

        Had my tunes and auto agent for about a month now. Super happy with results and wow was the my tuner delivered FAST, practically next day thru FedEx.

        Jorge

        Torres

        Kit was great so far 5" was very tight at the down pipe had to bend it on frame side. And had to weld up the clamps that hold exhaust together they were a little chincy other than that no complaints at all.

        Jeramie

        Speck

        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 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

        I am wicked happy with the kit I received. I was proud that I was able to do the installation.

        Clifford

        Camp

        So far so good

        Jeff

        Jordan

        Just finished my tuner and I love it. I I appreciate the quick shipping and great customer service u provided. Everything fit perfectly and was easy to do. I give ya 5 stars no doubt!

        Anthony Jackson

        Jackson

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

        Ron

        Pontius

        5 Stars!

        Daniel

        Johnson

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

        Darrell

        Blackw

        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

        Great products and lots of good assistance with the purchase!!! Thanks!!!

        Ray

        Chaple

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

        Jim

        Jones

        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

        Works great thank you so much 5 stars

        Jamie

        Moore

        Hi there and sorry it took me a long time to get back to y'all. I f**king love the way my truck runs and sounds now . Thank

        Jay

        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

        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

        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

        The best product and excellent customer service!

        Jeff

        Boudreau

        Yes 😊

        Darrell

        McKittri

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

        Michael

        Gilbert

        I am very pleased with everything purchased from here. All went smooth with no installation issues. Thank you for making my truck awesome!

        Gary

        Morrison

        The products that I bought from your company are outstanding and your customer service is second to none thank you for all of your help. I will recommend your company to everyone. THANK YOU VERY MUCH YOU GUYS ARE AWESOME

        James

        Milburn

        Excellent service and parts... Fast shipping!

        Jonathan

        Coo

        Works awesome. Thanks I appreciate you.

        Don

        Allison

        Fast shipping and good fitment

        Mitchell

        White

        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

        good tunner worked the way they said.

        Bat

        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

        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

        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

        Very nice, everything was on time and how it supposed to be thanks guys

        Valentin

        Robl

        yes working good so far

        Steve

        Noriega

        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

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

        Sun

        Man

        Happy

        Karl

        Patay

        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

        Charlie

        Wade

        Everything was handeld very well and all the stuffed worked no problem

        Chris

        Shires

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

        Ray

        Moyer

        Truck is back to running like it should thanks

        Johnny

        Quarles

        Great company to deal with will definitely use them again

        mkhot

        shottra

        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

        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

        Exhaust came in on Tuesday. Well packaged and perfect box. Got the truck completely done today. Slow day at the shop so I got it all done. I want expecting that much power honestly. What a difference. Already 3.5mpg better. Truck is a monster now. Shocked really. Sounds sick too!!!! Thank you guys for the product, communication. Perfect. It's like a new truck.

        Harrison

        Lansdale

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

        Brock

        M

        Everything worked out perfectly. Super happy.

        Rian

        Mckinnon

        5 star best of the best

        Tryhard

        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

        The kit was fantastic. My stage 2 tow tune is a good tune.

        Jeff

        Wooton

        Great! Thanks!

        Goat

        Snob

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

        Nestor

        Bueno

        Everything went good on the install

        BJ

        Putman

        Yes very happy with all your service. Thanks

        Wayne

        Hucke

        Received everything very quickly!

        Greg

        Rinkes

        You guys did awesome!!!

        Whitney

        Schiesser

        I am more than happy with it. I have completed the DPF removal and straight pipen install. I have not removed the EGR. I can say that I have picked up more power and 3 more mpg towing. I have an 8k pound bumer pull camper. There is a little black smoke when I punch it; none if I drive "normal". My wife said it is louder, who asked her. I have been on the fence but your price and the extra $100 off, with free shipping was the factor. Thanks for the entire process from ordering to installation videos.

        Scott

        Stribling

        Works great for me.

        Jeff

        McGuffin

        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

        Very happy with my order. Could have used some instructions on the install. Thanks Youtube. Also don't really understand the trans tune. Didn't get any verification it was installed on the tuner or even how it is installed. Don't even know if I really have it.

        Tracy

        Funderb

        The best customer service in the business!!!!

        Brock

        Maxwell

        Everything went well. Thank you very much

        Tom

        Honrath

        Great customer support!

        Javier

        Hernandez

        Great!!!

        Doug

        Candler

        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

        Great product and super nice customer service

        David

        Hancock

        The kit works great. The DPF and DEF deletion pipes fit perfectly. The EGR Kit had everything I needed and the RaceME Ultra was easy to install. The way the truck runs now is awesome, The horsepower and fuel mileage was exactly what I was looking for. The fuel mileage on my 2017 Dodge with the 6.7 cummins with from 15-16 MPG to 24-26 MPG on the highway and from 11-12 to 18-19 in town. I'm extremely happy with my purchase. Thank you.

        Dave

        Peevey

        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

        I'm very impressed by the sound and power it makes when I get on the throttle(WOW😁)

        Eddie

        B

        Good service prompt delivery!

        R

        Bersano

        Excellent customer service and the process was pretty simple overall (lots of wrenching but so worth it!). We are ecstatic with the improved performance of the truck. Tuner is excellent and easy to understand!

        Dianne

        Brooks

        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

        Worked great

        Kenzie

        Trucking

        Yes I was very happy.

        Lewis

        Drywall

        Five stars, very responsive!

        Nelson

        Merced

        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

        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

        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

        THANK YOU!

        Shane

        Awesome fast shipping

        Mike

        Bumpus

        Instructions would be awesome. But overall very happy with products performance

        Kyle

        Roose

        You did a great job 🤙

        Oliver

        Large

        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

        Everything I have ordered so far has installed and functioned without fail. Shipping has been prompt. Customer service has been knowledgeable. I would recommend these products.

        Joe

        Murphy

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

        Marty

        Waggo

        Works great thanks

        Tyler

        Birtciel

        I love all my products and my truck runs great

        George

        House

        The kit was great and super easy to install. I didn't see the transmission tune.

        Ralph

        Franks

        Great everything worked perfectly!

        Dave

        Skibinski