The Best LML Delete Kit for 2011–2016 Duramax
2011–2016 GM Duramax 6.6L Delete Kit Guide
For Chevy Silverado & GMC Sierra 2500/3500 with the 6.6L LML Duramax
View the All-In-One LML Delete Kit
Quick Overview
| Average Savings | Exhaust Temp Drop | Customer Reviews | Estimated Payback |
|---|---|---|---|
| $500+/year | Up to 200°F lower | 165+ verified reviews | 1–2 years |
On this page:
- What an LML delete kit is
- Why owners delete the LML
- What’s included
- Year and fitment guide
- Stock vs. deleted comparison
- Installation overview
- FAQ
Why LML Owners Look for a Delete Kit
If you own a 2011–2016 Chevy Silverado or GMC Sierra with the 6.6L Duramax LML, you already know the common issues: frequent DPF regens, DEF refills, EGR problems, and rising repair costs.
The All-In-One LML Delete Kit is designed to simplify the process by putting the main components in one package, so you do not have to source parts from different vendors.
What Is an LML Delete Kit?
An LML delete kit includes hardware and tuning components used to remove the main emissions systems on the 2011–2016 6.6L Duramax LML.
The LML generation is known for carrying the full DPF + DEF + EGR system, which adds complexity, maintenance, and failure points compared with earlier Duramax platforms.
Main Systems Addressed
| System | What It Does | Why Owners Replace/Remove It |
|---|---|---|
| DPF | Captures soot and triggers regen cycles | Owners want to eliminate regens, lower backpressure, and avoid costly replacement |
| DEF / SCR | Uses DEF fluid and sensors to reduce emissions | Owners want to avoid fluid costs and sensor-related repairs |
| EGR | Recirculates exhaust gases into the intake | Owners often remove it to prevent buildup and avoid EGR cooler issues |
Why Owners Delete the LML Duramax
-
Frequent DPF regens
Regens add heat and can contribute to exhaust-system wear over time. -
EGR cooler failures
The LML EGR cooler is one of the most commonly discussed weak points on this platform. -
DEF system repairs
NOx sensors, DEF injectors, and related parts can become expensive to maintain. -
Throttle response and towing feel
Many owners report better response and smoother power delivery after a full delete. -
Fuel economy concerns
Regens and EGR operation can reduce efficiency in some driving conditions.
“Deleted my 2014 Sierra at 85k miles. Throttle response is night and day — and I haven’t touched my DEF tank in 14 months.”
— Verified customer review
See the complete LML delete kit
What’s Included in the All-In-One LML Kit
This package is built to give LML owners the main parts needed for a complete setup in one order.
| Component | Details |
|---|---|
| Mini Maxx V2 Tuner | Pre-loaded with year-specific tuning, SOTF capable, and includes in-cab monitoring |
| 4" Stainless Delete Pipe | Available in 304 or 409 stainless, matched to the correct flange type |
| Complete EGR Delete Kit | Includes block-off plates, coolant reroute parts, and required hardware |
| Installation Hardware | Gaskets, bolts, clamps, and related parts for installation |
Important Before Ordering
You must confirm your turbo outlet flange type.
- 2011–Early 2015: V-band clamp
- Late 2015.5–2016: 3-bolt flange
These two versions are not interchangeable.
Get the All-In-One LML Delete Kit
LML Delete Kit Fitment Guide
This kit fits 2011–2016 Chevy Silverado and GMC Sierra 2500/3500 trucks with the 6.6L Duramax LML. The key difference is the turbo outlet flange.
| Year Range | Flange Type | Compatible |
|---|---|---|
| 2011 – Early 2015 | V-Band | Yes |
| Late 2015.5 – 2016 | 3-Bolt | Yes |
| Cab & Chassis Models | Varies | No |
Not sure what your truck has? Contact us and we can help confirm fitment.
Stock LML vs. Deleted LML
| Category | Stock LML | Deleted LML |
|---|---|---|
| DPF regen cycles | Frequent under load | Eliminated |
| EGR cooler risk | Present | Removed |
| Exhaust temperature | Higher | Lower |
| DEF cost | Ongoing | Eliminated |
| Throttle response | More restricted | Improved |
| Fuel economy | Reduced by regens and EGR | Often improved |
| Towing consistency | Can be interrupted by regens | More consistent |
Typical Ownership Costs
| Expense | Estimated Cost |
|---|---|
| DEF fluid | $400–$600/year |
| NOx sensor replacement | $400–$900 |
| DPF replacement | $3,000–$5,000 |
| EGR cooler failure | $4,000–$8,000+ |
| All-In-One LML Delete Kit | $1,393.20 one-time |
Many owners estimate break-even in 12–24 months.
Shop the All-In-One LML Delete Kit
Why Choose This LML Kit
- Genuine Mini Maxx V2 tuner
- Stainless 4" delete pipe
- Complete EGR delete parts
- Correct fitment for 2015.5 and 2016
- All main installation hardware included
Installation Overview
Estimated install time: 4–8 hours for most experienced DIY owners.
-
Confirm your year and flange type
Check whether your truck uses the V-band or 3-bolt outlet. -
Flash the ECU first
Load the correct tune before removing emissions hardware. -
Remove the DPF and catalytic components
Install the matching 4" delete pipe. -
Complete the EGR delete
Remove the EGR valve and cooler, then install the included hardware. -
Verify tuning and test drive
Confirm everything is clear and check operation after install.
For off-road and competition use only.
Duramax Generation Comparison
| Generation | Years | Emissions Complexity | Delete Benefit |
|---|---|---|---|
| LB7 | 2001–2004 | Low | Moderate |
| LLY / LBZ / LMM | 2004–2010 | Medium | Good |
| LML | 2011–2016 | High | Exceptional |
| L5P | 2017+ | Very high | Varies |
Ready to Upgrade Your LML?
Join 165+ verified owners who chose an all-in-one solution to eliminate regen issues, reduce maintenance, and improve drivability.
- Mini Maxx V2 tuner included
- Year-specific stainless delete pipe
- Complete EGR delete kit
- Hardware and gaskets included
Get the All-In-One LML Delete Kit
Questions about fitment? Contact our team.
Frequently Asked Questions
Is it worth deleting an LML Duramax?
For many owners, the decision comes down to reducing DEF costs, avoiding emissions-related repairs, and improving overall drivability.
What comes in the kit?
The kit includes a Mini Maxx V2 tuner, a year-matched 4" delete pipe, a complete EGR delete kit, and the main installation hardware.
Will this fit a 2015.5 or 2016 LML?
Yes, as long as you select the correct 3-bolt flange option for late 2015.5–2016 trucks.
Do I need to confirm my flange type?
Yes. This is the most important fitment detail for ordering the correct pipe.
How long does installation take?
Most experienced DIY owners complete the job in 4–8 hours.
Can I contact you before ordering?
Yes. Reach out through our contact page and we can help confirm fitment.
DPF Delete
GM Duramax | DPF Delete Kits | EGR Delete Kits | Delete Tuners | Contact Us
For off-road and closed-course competition use only. Check all local, state, and federal regulations before installation.