What's a Duramax LBZ Delete Kit?
An LBZ Duramax Delete Kit is a performance package designed to remove the factory EGR system and the restrictive catalytic converter to improve engine longevity, power, and efficiency.
What's Included in a LBZ 6.6L Duramax All-in-one Kit?
Each LBZ Duramax All-in-One Kit includes premium performance parts engineered for maximum fitment and power:
- Tuner support
- Exhaust pipe replacing the restrictive catalytic converter
- EGR delete kit block-off plates
- Delete kit flow intake elbow for improved throttle response
- High flow intake pipe to reduce soot builddup
Key Benefits of Installing a Duramax LBZ Delete Kit
An LBZ EGR delete kit high flow upgrade provides major improvements for towing, daily driving, and off-road diesel performance.
- Reliability: Eliminate the EGR cooler to prevent coolant leaks and head gasket failure.
- Engine Longevity: Stop soot recirculation to keep your oil clean and intake clear.
- Lower Maintenance: End expensive EGR valve cleanings and repetitive cooler repairs.
- Diesel Performance Gains: Experience smoother power delivery and sharper throttle response.
- Better Cooling: Reduce engine temperatures by removing the restrictive EGR system.
- Fuel Economy Improvement: Cleaner intake airflow improves combustion efficiency.
LBZ Duramax Delete Kit: Deleted vs. Stock
| Dimension |
Stock (Factory) |
Deleted (Upgraded) |
| Horsepower |
Rated at 365 HP; factory tuning is conservative to manage emissions and heat soak. |
Increased; Safe power gains of 50–120+ HP are easily unlocked through performance tuning and a free-flowing exhaust. |
| Fuel Economy |
Moderate; efficiency is hindered by heated intake air and backpressure from the factory catalytic converter. |
Improved; By allowing the engine to breathe clean, cool air and reducing backpressure, owners typically see a 1–3 MPG gain. |
| Maintenance Cost |
High; Frequent EGR valve carbon cleaning and expensive repairs to the cooling system are common requirements. |
Reduced; Eliminates the primary failure points, saving thousands in long-term engine and cooling system repairs. |
| Reliability |
Moderate; EGR cooler leaks are a notorious issue that can lead to head gasket failure or catastrophic hydro-locking. |
Significantly Enhanced; Often called "Bulletproofing," removing the EGR cooler eliminates the #1 cause of mechanical downtime. |
| Exhaust Gas Temp |
High; Recirculated hot gases and restrictive factory hardware keep EGTs elevated, especially while towing. |
Lower EGTs; Improved airflow and clean intake air allow the engine to run 150–200°F cooler under heavy load. |
| Legal Status |
Street Legal; EPA and CARB compliant. |
Off-Road / Competition Use Only. |
GM Duramax LBZ Diesel Engine Models Year Fitment Guide 2006-2007
| Delete Kit |
Model Year |
Engine |
Emissions Systems |
Common Issues |
Recommended Setup |
| 6.6L GM Duramax LBZ Delete Kits (2006–2007) |
2006–2007 |
DURAMAX 6.6L LBZ |
EGR |
EGR valve and cooler failures, soot buildup, reduced airflow |
EGR Delete Kit (tuning optional) |
How to Install a Duramax LBZ delete kit
Installing a Duramax LBZ Delete Kit is one of the most straightforward diesel emission upgrades available.
Installation Steps
- ECM Preparation with a tuner: Apply tuning software to disable EGR sensor diagnostics and prevent a check engine light.
- Accessing the EGR Components: Remove intake plumbing and surrounding components in the engine bay.
- EGR Hardware Removal: The kit removes the EGR valve and cooler, eliminating soot and coolant leak risks.
- Installation of Delete Hardware: Seal intake and exhaust ports with precision hardware for leak-free fitment.
- Final System Check: Clear remaining codes and monitor throttle response, airflow, and temperatures.
Note: Every EngineGo kit includes a comprehensive, model-specific guide to ensure your installation is seamless and your fitment is guaranteed. For technical deep-dives, step-by-step photos, and specific torque specs, you can find detailed information under the "Installation Guide" tab on every product page.
Why Choose EngineGo for Duramax LBZ Delete Kit
Choosing EngineGo means partnering with diesel performance experts. We back every build with technical support, ensuring your truck moves from the shop to the street with peak power and reliability.
15+ Years of Expert Support
In-House Specialists: Our team has over 15 years of hands-on experience in Ford Powerstroke, Cummins, and Duramax platforms..
Expert Guidance: We provide comprehensive support, from initial fitment questions to final tuning advice.
High-Performance Reliability
Built to Last: We pride ourselves on offering parts designed for maximum durability and long-term reliability.
Expertly Vetted: Every product is backed by our deep understanding of diesel engines.
A Seamless Shopping Experience
Free Shipping: Many of our kits include free shipping to get your project started without extra costs.
Money-Back Guarantee: Shop with confidence knowing your purchase is protected if you aren't satisfied.
Off-Road Use Disclaimer
Diesel delete kits are intended for off-road and competition-use vehicles only. These products are not legal for use on public roads and are sold strictly for non-emissions-controlled applications.
Always verify and comply with local, state, and federal regulations before purchase or installation.
FAQ
Does the LBZ Duramax have a DPF or DEF system?
No. The 2006–2007 Durmax LBZ predates mandatory DPF/DEF requirements. It only uses an EGR system and catalytic converter.
Will deleting the LBZ improve fuel economy?
Most owners report an improvement of 1 to 3 MPG. By removing the restrictive catalytic converter and ensuring the engine only breathes fresh, cool air, the combustion process becomes significantly more efficient.
