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Chevrolet/GMC Duramax 6.6L| Full Delete Bundle | 2017-2023

Chevrolet/GMC Duramax 6.6L| Full Delete Bundle | 2017-2023

Regular price $2,380.00 $
Regular price Sale price $2,380.00 $
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Shipping calculated at checkout.

The Chevrolet/GMC Duramax 6.6L Full Delete Bundle 2017-2023 offers a complete solution for emissions removal, boosting longevity and fuel efficiency. It includes a tuner device with Advanced Free Custom Tuning, ECM unlock kit, CAN plug, DPF, and EGR delete.

✅ Important: You Save $1500+ with Free Tuning!

Exhaust Type
Down Pipe?
Muffler
  • Enhanced Power & Torque
  • Increase Fuel Efficiency
  • Boost Engine Life
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Do I get a single tune or a shift-on-the-fly tune?

The tune we offer with this bundle is a shift-on-the-fly tune. You can switch between five power levels in real time through your steering wheel:
Level 1: Stock
Level 2: +50 HP
Level 3: +100 HP
Level 4: +150 HP
Level 5: +200 HP

Important:

This is just what most customers want. If you’re looking for something different, just let us know on the form we send after your order—we’ll make it happen.

Who Makes Your Tunes?

All of our tunes are made in-house by top-tier engineers—no outsourcing, no third-party files. These are guys who’ve worked with the big names: Cummins, Power Stroke, and Duramax. They know these systems inside and out, and they build every tune to be clean, reliable, and tailored to your setup.

Why We Offer Free Tuning?

Our tunes are made in-house by top engineers who’ve worked with Cummins, Duramax, and Power Stroke. No third parties, no reused files—just custom, high-quality tuning built for your setup. It doesn’t cost us much to adjust per vehicle, so why charge you? Simple as that.

Down Pipe Features

  • 3.5" Stainless Steel Piping
  • 20% better flow than the factory pipe
  • Heat wrap included keeping engine bay temperatures down
  • Greater heat-retention
  • Will not affect emissions systems
  • Maximum flow for competition applications
  • 4-bolt flange, two studs installed
  • Completely eliminates the DOC

What's Included?

Everything You Need to Delete Your Emissions System:

1) HP Tuner device and all required accessories. Plus Advanced Custom Tuning For Free.

2) 4” Stainless Steel DPF & CAT Delete Pipe

3) Complete EGR Delete Kit

4) Can Plug (Bypass factory signals for tuning access)

5) ECM Unlock Tool

6) HP 8 Credits

Optional 4" and 5" Stainless Steel Full Exhaust System

Optional Muffler System.

Important Information about the Tune

How does tuning work?

Tuning involves adjusting your vehicle's engine control unit (ECU) to enhance performance, fuel efficiency, or other preferences. It can modify the way your engine performs by changing settings like fuel/air ratios, ignition timing, and turbo pressure.

How We Build the Advanced Custom Tune for You

When you get started with us, we’ll ask for a few details about your truck—like the VIN, make, model, and any unique setups. With that info, our tuning pros get to work, building a custom tune specifically for your truck. We’re talking about maximizing horsepower and torque and ditching those emissions system limits entirely. So, once it’s installed, no more dealing with DEF, no more annoying emissions lights popping up on your dash, and you’ll be able to tow some serious loads with confidence.

And here’s the best part: this whole process is all part of our service. No extra fees and we are the only company doing that.

What does the tuning device do?

The tuning device connects to your vehicle's OBD-II port and communicates with the ECU. It allows you to upload custom settings (or “tunes”) to adjust your engine's performance. These devices also allow for data logging, diagnostics, and monitoring of engine performance.

No need for a new ecm

Included in this kit is the HP Tuner, which allows you to unlock the ECM on 2017–2023 Chevy/GMC Duramax L5P vehicles. This tuner comes with an ECM unlock tool, enabling you to unlock the ECM directly through the vehicle’s OBD-II port. This eliminates the need to purchase and install a pre-unlocked ECM, reducing costs and simplifying the installation and tuning process.

Don't panic! We will send you detailed instructions. Plus, if you have any questions or get stuck during the installation, we've got you covered. Don't forget you have unlimited access to our professional tuning technicians.

Your Vehicle Information!

For these bundles, you will have a form to fill out once you receive your tuner. Installation instructions + form instructions will be emailed to you post purchase.

Shipping Time

We process and ship all orders within 1-2 business days to all U.S. states. Once shipped, delivery typically takes 5-8 business days, depending on your location. You will receive a confirmation email with a tracking number once your order has been dispatched. Please note that delivery times may vary slightly due to carrier schedules or external factors beyond our control.

Discover What Our Patriots Are Saying About Us!

Get $950 Worth of Bonuses – Limited Time Offer

Offer
Value
Lifetime Tuning Adjustments
500$
Premium Lifetime Support
300$
Fast Shipping
150$

Total 950$ FREE

Save Up to $25,000 Just by Deleting Your Emissions System

Before Buying Delete Bundle

After Buying Delete Bundle

Cleaning the DPF

$400/3Y $0

Cleaning the EGR

$300/3Y $0

DEF Injector or Sensor Issues

$1500/3Y $0

DEF Fluid Costs

$700/1Y $0

DPF Failure or Clogging

$4000 $0

SCR System Failure

$5000 $0

Customer Reviews

Based on 89 reviews
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Jacob E.

I drive a 2020 Duramax, and for the longest time I was dealing with constant regens, sluggish throttle, and weird shifting, especially under load. Every shop I talked to wanted me to go the ECM swap route, but the cost was ridiculous and I didn’t want to mess with the truck’s computer if I didn’t have to. That’s when I came across Diesel Patriots. I saw they were offering HP Tuners with their kit and at first I was like, “Great, now I’ve gotta mess with software and a laptop.” But I decided to give it a shot — and I’m glad I did. The kit came with everything. Exhaust parts were high quality, and the tuner setup came with clear steps. Yeah, you need a laptop — but it’s really not hard. They walked me through it over the phone step-by-step, and within 30 minutes I had the tune flashed and the truck ready to go. Honestly, it was way easier than I expected. No confusing menus, no crazy coding — just load it up, follow the instructions, and hit flash. The results? Immediate. My truck fired up smooth, no codes, no rough idle. It pulls harder, shifts better, and I haven’t had a single regen since. Fuel mileage went up around 2 MPG, and the truck finally feels like it’s breathing right. What I liked most is that Diesel Patriots didn’t just sell me parts and disappear. They picked up the phone, answered questions without rushing, and made sure I got it done right. That level of support is rare these days. If you’re like me and thought HP Tuners would be too complicated — it’s not. Especially when you’ve got a team like this backing you up.

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Adam P.

Used this on my 2023 Denali HD — install went great, tuning was straightforward, and the truck hasn’t thrown a single light. Huge improvement over the stock setup.

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Corey T.

Before this delete, my 2018 Duramax felt like it was gasping for air half the time. Turbo lag, jerky shifts, all kinds of weird shit. Deleted it, and now it drives like a diesel should. No smoke, no loud exhaust, just smooth, usable power.

E
Eric H.

I deleted my ‘17 L5P after getting fed up with that DPF garbage. I don’t baby my truck — I tow, I haul, I work — and all that emissions stuff was doing was holding it back. This kit was the fix. Install wasn’t hard, and once I flashed the tune, it was like a weight came off the truck. No more DEF warnings, no more half-assed shifting. Just works.

M
Mark V.

This kit fixed my regen nightmare. My 17 Duramax would regen constantly — sometimes twice a day. After deleting, that problem is gone and it feels like a different truck.