Best Delete Kit for L5P Duramax (2017–2025) Buying Guide

Why Consider a Delete Kit for Your L5P Duramax?

What Is a Delete Kit?

If you’re driving a 2017–2025 L5P Duramax, you’ve probably heard the term “delete kit” thrown around by other diesel owners or tuners. But what exactly is it?

An L5P delete kit is a set of components designed to remove the restrictive emissions control systems (DPF, EGR, and DEF) from your truck. While these systems help meet environmental standards, they often compromise performance, fuel efficiency, and engine longevity. Removing these components with the best L5P delete kit allows your engine to perform at its best without the limitations imposed by factory emissions equipment.

A diesel delete kit includes components like:

• DPF delete pipe (replaces restrictive factory exhaust)
• EGR block-off or full delete components
• DEF system removal or bypass
• ECM/OBD2 Tuner to prevent error codes and enable performance tuning

In essence, a delete kit allows your L5P Duramax to “breathe” freely, enhancing engine power, efficiency, and reliability.

Benefits of Deleting (Performance, Reliability, MPG)

Let’s be real—most L5P owners aren’t deleting their trucks just for the fun of it. The reason is simple: performance. A full delete opens up your Duramax, giving it the airflow and combustion freedom it was meant to have before emissions gear choked it down.

Here’s what you can expect:

• More Power: Removing DPF, EGR, and DEF systems allows your engine to produce more horsepower and torque. Many users report gains of 100 HP or more with proper tuning.

• Better Fuel Economy: Say goodbye to forced regens and clogged filters. Without the DPF, your truck isn’t dumping diesel to burn soot, which means noticeable gains in MPG—often 2–4 mpg better.

• Lower Engine Temps: EGR systems recirculate hot exhaust gas into the intake. Once deleted, your engine breathes cooler, leading to lower EGTs (exhaust gas temps).

• Fewer Maintenance Headaches: No more DEF refills. No more check engine lights due to sensor failures or clogged filters.

Legal Disclaimer & Off-Road Use Only

Under current EPA regulations in the U.S. and Canada, removing emissions equipment on a diesel truck that is used on public roads is technically illegal. The only legal exception is if the truck is used exclusively for off-road purposes.

That’s why all reputable sellers, including SPETUNER, clearly state: “Our delete kits are for off-road use only.”

If your truck still needs to pass emissions inspections, deleting it could put you in violation of federal or provincial laws. Fines can be significant.

We don’t encourage breaking regulations. We’re here to educate and supply equipment intended for legitimate off-road use only.

Best Delete Kits for L5P Duramax: Top 3 Picks

Best L5P Duramax Delete Kits Comparison Table

Product Comparison Table: Features & Pricing

Which Kit Is Right for You?

For Budget-Conscious Buyers

Choose Tuner Depot if:

• You’re comfortable with DIY

• You want tuning + delete, but don’t need hand-holding

• You want flexibility in exhaust choices

For Maximum Performance & Features

Choose Diesel Dudes if:

• You want the biggest gains

• You’re OK with a higher budget

• You need everything in one package

For Full Plug-and-Play Convenience

Choose SPETUNER if:

• You want OEM-quality parts

• You appreciate installation support

• You prefer a trouble-free setup

👉Ready to upgrade your Duramax?  Shop SPETUNER All-in-One L5p tune and delete kit for Duramax 2017/ 2018/ 2019/ 2020/ 2021/ 2022/ 2023 Diesel Now

DPF/EGR/DEF Delete 2017-2023 L5P 6.6L Duramax All-in-One Kit

L5P delete kit

$3299.00

Buy Now

SPETUNER vs Competitors: What Stands Out

• Support & Guidance

• Precision Product Engineering

• Peace of Mind Service Experience

Spetuner Featured L5p Delete Kits

For Duramax owners seeking the most reliable and complete delete solutions, SPETUNER proudly offers a full range of featured L5P delete kits designed for 2017–2024 Chevy and GMC 6.6L Duramax engines. Each kit is built to deliver maximum performance, long-term durability, and straightforward installation.

Our all-in-one diesel delete kits — such as the DPF EGR DEF Delete Kit (2017–2023 L5P 6.6L Duramax) and the EGR DPF Downpipe CAN Bus Plug Delete Kit — combine all critical components in one package, saving you time and ensuring perfect fitment.

Common Mistakes When Choosing a Delete Kit for L5P Duramax

1. Thinking All L5Ps Are the Same

Each model year may require different components or ECM tools.

2. Going Cheap on Materials

Low-end kits may use mild steel that rusts quickly, especially in northern climates.

3. Forgetting the ECM Unlock Tool

You may not be able to flash tunes without the right unlock device.

4. Installing Without a Tune

Physical delete without reprogramming leads to limp mode and errors.

Still Not Sure? Here’s What to Ask Before You Buy

• Does the kit include tuning and ECM unlock?

• Is it compatible with my truck's exact model year?

• Can I install it with the tools I have?

• What support does the seller provide after the purchase?

Installation & Difficulty Level

Can You Install It Yourself?

Yes, with experience and the right tools. No, if you’ve never worked on exhaust or tuning systems.

Tools Required & Time Estimate

• Basic socket set, torque wrench

• Flash tuner or laptop

• Lift or jack stands

Install time: 4–8 hours, depending on setup.

DIY vs Professional Installation

DIY is doable with guidance. SPETUNER provides excellent documentation.

SPETUNER Support Resources

Detailed install guides, responsive tech team, and video walk-throughs.

Conclusion: Our Final Recommendation

For the best all-around quality and support: Choose SPETUNER.
For budget builds, Tuner Depot is a solid, customizable option.
For max output and complete solutions, the Diesel Dudes deliver it all.