LML Duramax full delete kit with EZ Lynk Auto Agent 3 (2015.5-2016)
The 2015.5, 2016 6.6 LML Duramax Delete Kit with EZ Lynk Auto Agent 3 tuner combines VIN-specific tuning with DPF, DEF/SCR, and EGR delete hardware. The kit reduces exhaust restriction, stops regeneration after correct calibration, and provides wireless monitoring and selectable power levels for off-road Chevrolet and GMC Pickup applications.
What's included in delete kit
The LML delete kit combines tuning and bolt-on hardware for the late-LML 3-bolt exhaust configuration.
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EZ Lynk Auto Agent 3 - Wireless OBD-II interface controlled through a smartphone app. EZ Lynk supports cloud-delivered custom tunes, diagnostics, data logging, engine monitoring, and SOTF on this Pickup application.
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DPF Delete Pipe - Replaces the particulate filter and catalyst section. The late-LML pipe uses a 3-bolt flange and connects to the factory downpipe.
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4-Inch Exhaust System - Provides a larger exhaust path with a balanced sound.
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5-Inch System - Provides maximum available flow and a deeper tone.
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LML EGR Delete Kit - Removes the EGR valve and cooler to stop exhaust recirculation and reduce soot buildup. The hardware includes the required block-off plate and installation components.
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Installation Hardware - Selected configurations include application-specific pipes, clamps, and stainless steel components where supplied.
Vehicle compatibility
The 6.6 Duramax kit fits late-LML Chevrolet and GMC Pickup trucks with the 3-bolt pipe connection.
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Years: 2015.5, 2016
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Makes: Chevrolet, GMC
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Models: Silverado 2500HD, Silverado 3500HD, Sierra 2500HD, Sierra 3500HD
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Engine: 6.6L LML Duramax
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Transmission: Allison automatic
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Body: Pickup
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Pipe Connection: 3-bolt flange
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Application: Off-road
Early-2015 Duramax trucks with the V-band connection require a different pipe configuration.
Performance & tuning
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No forced regeneration
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Stronger towing response
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Better throttle response
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Potential MPG improvement
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Fewer emissions derates
The LML Duramax delete kit uses VIN-specific ECU Profiles with five supported power levels for 2011-2016 GM/Chevy Pickup applications.
|
Power Level |
+HP |
Best for |
|---|---|---|
|
Stock |
0 HP |
Factory-level horsepower |
|
Level 2 |
+30 HP |
Daily driving |
|
Level 3 |
+65 HP |
Towing |
|
Level 4 |
+100 HP |
Street performance |
|
Level 5 |
+130 HP |
Maximum available output |
SOTF allows compatible Duramax Pickup trucks to change supported power levels without loading a separate ECU Profile for every change.
|
Metric |
Expected Change |
Notes |
|---|---|---|
|
DPF regeneration |
Eliminated |
With correct calibration |
|
DEF use |
Eliminated |
No normal DEF refills after delete |
|
Fuel economy |
Potential improvement |
Actual MPG depends on load and driving |
|
EGTs |
Potentially reduced |
Reduced exhaust restriction |
|
Backpressure |
Reduced |
DPF/SCR restriction removed |
|
Limp mode / derate |
Emissions-related triggers addressed |
Unrelated faults remain active |
|
Reliability |
Fewer emissions-system failure points |
Regular maintenance still required |
Which configuration should you choose?
|
Option |
Choice |
Recommended for |
|---|---|---|
|
Exhaust |
DPF Delete Pipe |
Retaining more of the factory exhaust |
|
4-Inch Exhaust System |
Balanced flow and sound |
|
|
5-Inch Exhaust System |
Maximum flow and deeper sound |
|
|
Muffler |
Straight Pipe |
Maximum volume |
|
Β |
With Muffler |
Reduced sound and drone |
How the delete kit works on your GMC Duramax
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Loads VIN-specific EZ Lynk tuning through the cloud.
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Removes DPF and catalyst restriction to stop regeneration.
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Completes the DEF delete and removes SCR-related operation.
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Eliminates EGR recirculation to reduce intake soot.
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Reduces backpressure for stronger throttle and towing response.
Installation information
The Duramax kit includes installation instructions, and an owner with basic-to-intermediate mechanical skills can install the bolt-on hardware. The correct ECU Profile should be loaded before DPF, DEF/SCR, or EGR hardware is removed.
EZ Lynk connects to the OBD-II port, creates a wireless connection with the smartphone, and installs the available tune through Vehicle > ECU Profiles.
Technical specifications
|
Specification |
Detail |
|---|---|
|
Fitment Years |
2015.5-2016 |
|
Engine |
6.6L LML Duramax |
|
Tuner |
EZ Lynk Auto Agent 3 |
|
Tuning Type |
VIN-specific ECU Profiles |
|
Power Levels |
Stock / +30 / +65 / +100 / +130 HP |
|
SOTF |
Supported on Pickup |
|
Exhaust Connection |
3-bolt flange |
|
Exhaust Option |
DPF Delete Pipe / 4-Inch System / 5-Inch System |
|
Muffler Option |
Straight Pipe / With Muffler |
|
Transmission |
Allison automatic |
|
Systems Removed |
DPF / DEF-SCR / EGR |
|
Application |
Off-road |
No More Emissions Codes
Correct EZ Lynk calibration prevents emissions-related warnings caused specifically by removed DPF, EGR, DEF, and SCR hardware. Normal diagnostics remain active for unrelated engine, Allison transmission, turbocharger, fuel-system, wiring, and sensor faults.
DPF and regeneration codes
|
DTC Code |
Description |
|---|---|
|
P2002 |
Diesel Particulate Filter Efficiency Below Threshold |
|
P242F |
DPF Restriction - Ash Accumulation |
|
P2452 |
DPF Differential Pressure Sensor Circuit |
|
P2453 |
DPF Differential Pressure Sensor Range / Performance |
|
P2458 |
DPF Regeneration Duration |
|
P2459 |
DPF Regeneration Frequency |
|
P2463 |
DPF Restriction - Soot Accumulation |
EGR system codes
|
DTC Code |
Description |
|---|---|
|
P0401 |
Flow Insufficient |
|
P0402 |
Flow Excessive |
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P0403 |
Control Circuit |
|
P0404 |
Control Range / Performance |
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P0405 |
Position Sensor Circuit Low |
|
P0406 |
Position Sensor Circuit High |
DEF / SCR Duramax codes (2015.5-2016)
|
DTC Code |
Description |
|---|---|
|
P203B |
Reductant Level Sensor Range / Performance |
|
P204F |
Reductant System Performance |
|
P207F |
Reductant Quality Performance |
|
P20B9 |
Reductant Heater Control Circuit |
|
P20EE |
SCR NOx Catalyst Efficiency Below Threshold |
|
P2201 |
NOx Sensor Range / Performance |
|
P229F |
NOx Sensor Range / Performance |
Correct tuning also prevents emissions-related limp mode and derate conditions triggered specifically by removed DPF, DEF/SCR, or EGR hardware.
Not sure whether your LML Duramax has the required late-2015/2016 3-bolt connection? Send Dieselino the VIN so the correct exhaust configuration can be confirmed before ordering.






