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L5P Duramax Delete & Exhaust Kits

Is your 2017–2025 Duramax L5P struggling with DPF regen interruptions, reduced fuel efficiency, or lackluster throttle response? SuncentAuto’s L5P Delete Kits are engineered to restore unrestricted exhaust flow, unlock maximum horsepower, and optimize towing and work performance.

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What Is a Duramax L5P Delete Kit?

A Duramax L5P delete kit is a performance upgrade designed to remove restrictive emission components such as the DPF (Diesel Particulate Filter), EGR (Exhaust Gas Recirculation) and DEF systems. While factory emissions systems meet environmental standards, they can create long-term issues:

  • Frequent DPF regeneration cycles
  • Reduced fuel economy (MPG)
  • Loss of engine power under load
  • Turbo lag and excessive exhaust backpressure
  • Limp mode and warning lights

SuncentAuto L5P delete kits replace these components with high-flow pipes and CNC-engineered hardware. When combined with proper ECU tuning, your L5P Duramax experiences cleaner airflow, lower EGTs, improved throttle response, and optimized engine reliability for towing, off-road, or daily driving.

Key Benefits & Considerations

Advantages Considerations
Restores full exhaust flow for improved performance Increases emissions compared to factory configuration
Reduces exhaust gas temperature (EGT) for longevity ECU tuning required to prevent fault codes
Improves throttle response and towing power Intended for off-road / work-use; not street legal in many regions
Improves MPG after delete Professional installation recommended for best results
Eliminates regen interruptions and associated failures Optional EGR delete may require additional tuning

Vehicle Compatibility & Available Options

Engine Model Years Available Delete Options
6.6L Duramax L5P 2017-2019

Downpipe-Back DPF Delete
6.6L Duramax L5P 2017–2023

Racepipe DPF Delete and EGR Delete Kit

Downpipe-Back DPF Delete

DPF & CAT Delete Race Pipe
6.6L Duramax L5P 2017–2025

EGR Valve & Cooler Delete Kit

Downpipe

Exhaust Downpipe and Uppipe

Tip: Always confirm your exact year and desired setup (DPF-only or full delete) before purchase.

Installation Guide & Safety Notes

General Steps:

  1. Disconnect the battery and allow the engine to cool.
  2. Remove factory DPF, DOC, and optional EGR components.
  3. Install delete pipes, clamps, and supplied hardware.
  4. Verify clearances and secure all connections.
  5. Upload compatible ECU tuning file.
  6. Clear fault codes and perform test drive.

Important Notes:

  • ECU tuning is required for all deletes.
  • Professional installation recommended for full deletes.
  • Installation typically takes 2–4 hours depending on kit and engine.
  • Properly handle sensors to avoid check engine codes.

Buying Guide: How to Choose the Right L5P Delete Kit

  1. Match Engine & Year – L5P delete kits differ between 2017–2025 models.
  2. Define Your Goals – Daily driving, towing, or off-road performance.
  3. Pipe Material & Construction – 409/304 stainless steel, mandrel-bent, CNC flanges.
  4. Tuner Compatibility – Ensure the kit supports your ECU and chosen delete configuration.

Recommended Configurations by Scenario:

Scenario Recommended Kit Benefit
Daily Driving / Light Towing DPF Delete Pipe + Tuner Improved MPG, no regen interruptions
Heavy Towing / Work Use Full DPF Delete + Downpipe Lower EGTs, better airflow, improved durability
Off-Road / Competition Full Delete Kit (DPF + DOC + optional EGR) + Tuner Maximum performance & reliability

Purchase Guarantee & Service

  • High-quality stainless steel construction – resistant to corrosion & deformation.
  • Precision CNC fitment – guaranteed installation accuracy.
  • Strict QC inspection – every kit tested.
  • Comprehensive installation instructions included.
  • Expert technical support – online assistance anytime.
  • First order 10% discount – Use code: 10%NEWINAUTO
  • Free shipping & hassle-free returns
  • Guaranteed Fit for all supported models.

Related Products

All-in-One Duramax Delete Kit

Duramax DPF Delete Kit

EGR Delete Kit for Duramax

Related Articles

Best L5P Delete Kit for 2017–2025 Duramax

How Much Does It Cost to Delete an L5P

Best EGR Delete Kit for LML Duramax

FAQs

Many users report 1–3 MPG improvement, especially during highway driving or towing.

Yes. ECU tuning is required to prevent fault codes and ensure proper engine performance.

Yes, but full delete (DPF + optional EGR) provides better long-term reliability and lower EGTs.

Delete kits are intended for off-road and competition use only. Always check local regulations.

Depending on kit and experience, installation typically takes 2–4 hours. Professional installation is recommended for full delete kits.