EGR/DPF Delete Kit for 2011-2016 6.6L Duramax LML

SPEtuner DPF Delete Exhaust System & Complete EGR Delete Kit For 2011-2016 Chevy GMC LML 6.6L Duramax

Maximize the performance, fuel efficiency, and long-term reliability of your 2011–2016 Chevy/GMC 2500HD/3500HD 6.6L LML Duramax with the SPEtuner EGR/DPF Delete Kit. This comprehensive bundle pairs a high-flow DPF delete exhaust system with a complete, heavy-duty EGR delete kit. By eliminating restrictive factory particulate filters and soot-clogged EGR components, this system drastically reduces exhaust backpressure, lowers EGTs, improves turbo spool-up, and prevents endless clogged regeneration cycles. The ultimate plug-and-play solution built for severe off-road and race performance.

Key Features

• Total Emissions Assembly Eradication: Permanently bypass fragile DEF heaters, NOx sensors, active DPF "Regen" cycles, and EGR soot-dumping mechanisms that constantly risk leaving your truck stranded in reduced-power states.
• Massive High-Flow Exhaust Velocity: Replaces restrictive downstream emissions equipment with a smooth, continuous high-flow path, dropping exhaust backpressure to near-zero and protecting your VGT turbocharger.
• Drastically Drops EGTs (Exhaust Gas Temps): Eliminating the thermal cork of the DPF and catalytic components allows hot exhaust to evacuate instantly, preventing heat soak and safeguarding your pistons, head gaskets, and engine oil during heavy towing.
• Instantaneous Turbo Spool-Up: Removing the EGR and exhaust bottlenecks lets your turbocharger spin up effortlessly, completely curing low-end lag and providing immediate, razor-sharp throttle response.
• Maximized Fuel Economy (MPG): End the fuel-thirsty, active DPF regeneration cycles that waste raw diesel to "burn off" soot, yielding a dramatic, real-world improvement in your overall fuel mileage.
• Pure Engine Longevity: Keeping abrasive soot and hot exhaust gases out of your intake manifold via the EGR delete ensures your intake valves, pistons, and fuel injectors stay surgically clean for hundreds of thousands of miles.

Specification

• Material: T-409 Stainless Steel(it is magnetic)
• Thickness: 2mm thick for long-lasting durability and heat resistance
• Inlet Diameter: 4"/5"
• Mandrel-bent Construction: Maximum flow efficiency, helping your diesel breathe easier

How to Choose Your DPF Exhaust Pipe

4" vs 5" Straight Pipe Comparison

For the LML 6.6L Duramax, 4-inch straight pipes give a sharp, raspy tone at low RPM—great for daily use with minimal drone. The 5-inch option delivers a deeper, smoother sound, less rasp, and better flow—ideal for high-power builds and towing. Here are some selection suggestions:

• 4" Straight Pipe:  Ideal for stock or mildly modified trucks. Offers a sharp tone with minimal cabin drone, keeping the interior quiet during daily driving.
• 5" Straight Pipe: Best for aggressive builds or those seeking a deeper, fuller exhaust note. Maximizes flow and performance, especially in high-output or towing applications.

Different Types of DPF Delete

DPF Race Delete

• Only removes the DPF (keeps stock downpipe)
• Minimal performance gain but cheapest option
• Best for budget-focused or emissions-testing avoidance

Downpipe-Back Delete

• Replaces exhaust from the turbo downpipe backward
• Improves mid-range power and throttle response
• Good for street builds keeping stock turbo

Turbo Back Delete

• Full system replacement from turbo outlet
• Includes high-flow downpipe for maximum efficiency
• Reduces turbo lag and boosts top-end power
• Top choice for tuned/high-performance engines

Dual Exit (5" only)

• Splits into dual exhaust paths
• Enhances cooling and flow for extreme applications
• Used in heavy towing or competition setups

Muffler vs. No Muffler

With Muffler

• Tames exhaust noise for daily driving
• Slight power restriction (~5-10HP)
• More likely to comply with local noise laws

Straight Pipe (No Muffler)

• Loud, aggressive exhaust note
• Unrestricted flow for max horsepower
• Often illegal for street use (noise/emissions)
• Reserved for off-road/race applications

Fitment

• 2011–2016 Chevrolet Silverado 2500HD / 3500HD (6.6L Duramax LML Diesel)
• 2011–2016 GMC Sierra 2500HD / 3500HD (6.6L Duramax LML Diesel)

Note: Does NOT fit Cab & Chassis truck.