EGR/DPF Delete 2017-2025 L5P 6.6L Duramax Applicable Product
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Product Information +
- Brand: DPFexhaust
- SKU: #11228
- Availability: Many in stock
- Product Type: Delete Kit
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PLEASE NOTE!
2017-2025 GM 6.6 L5P Duramax Competition Track Upgrade Kit 2500HD 3500HD
This EGR/DPF/Downpipe/CAN BUS Plug Delete 2017-2025 L5P 6.6L Duramax All-in-One Kit allows removal of the catalytic converter and DPF filter from the exhaust system, and allows for more efficient removal of oil from the CCV supply line using two integrated differential drop devices in the CCV block. With reduced exhaust backpressure, a DPF delete enhances exhaust flow, thereby boosting your engine's performance.
Keep the CAN-BUS alive to the fuel tank and maintain normal ECU operation for fuel tank/lift pump data.
Key Benefits
- Free-flowing exhaust system for more power and better fuel economy
- Improved combustion chamber temperatures
- Better longevity of your engine's cooling and exhaust system
- Increased power from more powerful tune flashes
- All the necessary parts needed to fully delete your 2017-2025 L5P 6.6L Duramax Diesel GMC Sierra 2500 3500 HD or 2017-2025 L5P 6.6L Duramax Diesel Chevrolet Silverado 2500 3500 HD
Package Include
- EGR Delete Kit
- DPF Delete Kit
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Downpipe Exhaust
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⚠️Note: Accessories vary by order and may not include all listed.
EGR Delete Kit Specification
DPF Delete Kit Specification
| Exhaust Material | T-409 Stainless Steel, it is magnetic. |
| Thickness | 2mm thick, built to withstand high temperatures and heavy-duty use |
| Inlet Diameter | 4"/5" |
| Mandrel-bent construction | Maximum flow efficiency, helping your diesel breathe easier |
4'' vs 5'' DPF Delete Pipe Comparison
- 4-inch Pipe: Produces a tighter, raspier exhaust note—especially noticeable at lower RPMs. Ideal for daily driving or mildly tuned trucks where excessive drone is undesirable.
- 5-inch Pipe: Delivers a deeper, more refined tone with less high-pitch resonance. Better suited for high-output builds and towing applications, where improved exhaust flow is beneficial.
Driver Feedback Summary
- The 4" pipe works well for stock or lightly modified trucks and a quieter cabin.
- The 5" pipe is perfect for aggressive builds, deep-tone enthusiasts, and those maximizing exhaust performance.
Types of DPF Delete Kits
DPF Race Delete
- Removes only the DPF (retains stock downpipe)
- Offers minimal performance gains but is the most budget-friendly
- Best for cost-conscious users or avoiding emissions testing
Downpipe-Back Delete
- Replaces the exhaust from the turbo downpipe back
- Improves mid-range power and throttle response
- Ideal for street builds using the stock turbo
Muffler vs. No Muffler
With Muffler
- Reduces exhaust noise for daily driving
- Slight power restriction (~5–10 HP)
- More likely to comply with local noise regulations
Straight Pipe (No Muffler)
- Loud, aggressive exhaust tone
- Unrestricted flow for maximum horsepower
- Often not street-legal due to noise and emissions rules
- Intended for off-road or race use only
Downpipe Exhaust Specification
- Material: Stainless Steel
- Surface: Mirror Polish
OE vs. DPFexhaust Downpipe
| Feature | Stock Downpipe | DPFexhaust 3.5" Downpipe |
|---|---|---|
| Pipe Diameter | Narrow, restrictive | Large 3.5-inch high-flow mandrel bent |
| Surface Protection | Bare metal, prone to rust | Black ceramic coating, high-temp and anti-corrosive |
| Weld Quality | Spot-welded, uneven | Precision full TIG-welded flanges |
| Heat Management | None | Includes thermal wrap + stainless clamps |
| Flow Efficiency | High backpressure, turbo lag | Smooth, unrestricted flow—ideal for L5P downpipe delete builds |
What's the Difference Between a Downpipe and an Exhaust?
| Component | Function Description | Location |
|---|---|---|
| Downpipe | Connects turbo outlet to mid-pipe; manages hot gas flow | Immediately after the turbocharger |
| Exhaust System | Mid-section to tailpipe; reduces noise and handles emissions | From downpipe to tailpipe |
Upgrading the downpipe = performance and throttle response
Upgrading the exhaust = tone, flow, and backpressure control
CAN BUS Plug Kit Specification
Installation
L5P 6.6 Duramax 4" DPF Downpipe Installation Guide
L5P 6.6 Duramax EGR Delete Installation Guide
Shipping & Returns
Fast Shipping Policy
Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date. Click for Shipping Policy.
Easy Return Policy
Every order comes with a 14-day free return, which means you don't have to pay for a return slip. Click for Return Policy.