6.6L Duramax LML Tuning & Delete Kit | EGR, DPF & DEF Package | Chevy & GMC | 2011–2016
Type: All-In-One Kit | Fits: GM Duramax
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This LML package brings together Mini Maxx tuning, your choice of DPF race pipe or 4-inch/5-inch downpipe-back exhaust and EGR valve/cooler delete hardware for the listed GM pickups.
Vehicle fitment
- 2011–2016 Chevrolet Silverado and GMC Sierra 2500HD/3500HD with 6.6L Duramax LML.
- Not compatible with Cab & Chassis.
Specifications
| Specification | Details |
|---|---|
| Tuner | Mini Maxx with preloaded LML calibrations |
| Exhaust options | DPF race pipe or 4-inch/5-inch downpipe-back race exhaust, according to the selected variant |
| Earlier flange option | 2011–early 2015: V-band |
| Later flange option | Late 2015–2016: 3-bolt |
| EGR hardware | Block-off plates, reinforced coolant hose, clamps and fasteners |
What is included
- Mini Maxx tuner and LML calibration
- Selected year- and flange-matched DPF race pipe or downpipe-back exhaust
- EGR valve and cooler delete components
- Associated hardware, seals and coolant bypass hose
Before installation
- Visually inspect the exhaust connection before selecting a flange option; production overlap makes year alone insufficient.
- Tune the truck and verify operation before removing emissions hardware.
- Factory exhaust removal may require cutting.
For off-road or competition use only where permitted. Follow the supplied installation and tuning instructions.
Frequently asked questions
How do I select the correct flange option?
Inspect the connection: a circular clamp identifies the V-band option; three fasteners identify the 3-bolt option. Select the matching configuration.
Is custom-file purchase required in addition to this kit?
The described package includes the Mini Maxx and preloaded calibration for the listed LML application.
Is this only an EGR kit?
No. It includes tuning, the selected exhaust and EGR valve/cooler hardware.
Important Notes:
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Your satisfaction is important to us. If you wish to return an item or request a refund, please review the terms and conditions outlined in our Returns Policy.
Important Notices
- Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control laws apply. - Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area. - Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.
6.6L Duramax LML Tuning & Delete Kit | EGR, DPF & DEF Package | Chevy & GMC | 2011–2016
Vehicle Fitment
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