Description
xCustom diesel tuning for the GM / Duramax 6.6L — from the enthusiast-favourite 2006-2007 LBZ through the latest 2024-2026 L5P, covering Chevrolet Silverado and GMC Sierra 2500 HD / 3500 HD trucks. Built by Tactical Diesel for owners who want real-world horsepower and torque gains, sharper throttle response, and custom tune files calibrated to each Duramax platform's strengths.
Supported Duramax Platforms
- 2006-2007 LBZ 6.6L — Silverado / Sierra 2500 HD / 3500 HD (EZ Lynk Auto Agent 3)
- 2007.5-2010 LMM 6.6L — EZ Lynk Auto Agent 3
- 2011-2016 LML 6.6L — EZ Lynk Auto Agent 3 (free TCM calibrations)
- 2017-2018 L5P 6.6L — HP Tuners MPVI3 / MPVI4 (EZ Lynk is 2019+)
- 2019-2023 L5P 6.6L — EZ Lynk Auto Agent 3
- 2024-2026 L5P 6.6L — HP Tuners RTD
Compatible Tuning Devices
- EZ Lynk Auto Agent 3 (cloud tuning — 2006-2016 and 2019-2023 Duramax)
- HP Tuners MPVI3 / MPVI4 (2017-2018 L5P)
- HP Tuners RTD (2024-2026 L5P)
What You Get With a Tactical Diesel Custom Tune
Every Tactical Diesel custom tune is built for your specific VIN. Choose from Tow, Street, Performance, and Extreme tune files calibrated to your exact truck. EZ Lynk cloud platforms include tune revisions during your support period; HP Tuners platforms use Universal Credits. All files are calibrated for stock emissions hardware by default — emissions-off and race files are available on request.
Select your year and tuning device above to see the full tune file lineup, horsepower levels, installation details, and platform-specific notes for your exact Duramax setup.
Custom diesel tuning for the GM / Duramax 6.6L — from the enthusiast-favourite 2006-2007 LBZ through the latest 2024-2026 L5P, covering Chevrolet Silverado and GMC Sierra 2500 HD / 3500 HD trucks. Built by Tactical Diesel for owners who want real-world horsepower and torque gains, sharper throttle response, and custom tune files calibrated to each Duramax platform's strengths.
Supported Duramax Platforms
- 2006-2007 LBZ 6.6L — Silverado / Sierra 2500 HD / 3500 HD (EZ Lynk Auto Agent 3)
- 2007.5-2010 LMM 6.6L — EZ Lynk Auto Agent 3
- 2011-2016 LML 6.6L — EZ Lynk Auto Agent 3 (free TCM calibrations)
- 2017-2018 L5P 6.6L — HP Tuners MPVI3 / MPVI4 (EZ Lynk is 2019+)
- 2019-2023 L5P 6.6L — EZ Lynk Auto Agent 3
- 2024-2026 L5P 6.6L — HP Tuners RTD
Compatible Tuning Devices
- EZ Lynk Auto Agent 3 (cloud tuning — 2006-2016 and 2019-2023 Duramax)
- HP Tuners MPVI3 / MPVI4 (2017-2018 L5P)
- HP Tuners RTD (2024-2026 L5P)
What You Get With a Tactical Diesel Custom Tune
Every Tactical Diesel custom tune is built for your specific VIN. Choose from Tow, Street, Performance, and Extreme tune files calibrated to your exact truck. EZ Lynk cloud platforms include tune revisions during your support period; HP Tuners platforms use Universal Credits. All files are calibrated for stock emissions hardware by default — emissions-off and race files are available on request.
Select your year and tuning device above to see the full tune file lineup, horsepower levels, installation details, and platform-specific notes for your exact Duramax setup.
2006-2007 LBZ 6.6L Duramax - AutoAgent 3 Tuning
Custom diesel tuning for 2006-2007 LBZ 6.6L Duramax (Silverado / Sierra 2500 HD / 3500 HD), delivered through the AutoAgent 3. Real horsepower and torque gains on the LBZ 6.6L Duramax - the enthusiast-favourite pre-emissions Duramax - sharper throttle response, better towing manners, and VIN-specific tune files backed by Tactical Diesel support.
EZ Lynk Auto Agent 3 Cloud Tuning
The EZ Lynk Auto Agent 3 is a cloud-based OBD-II tuning device. Plug it into your Duramax, connect it to WiFi, and your Tactical Diesel technician builds and pushes VIN-specific tune files straight to your ECM remotely - no laptop, no core return. Switch between tune levels on the fly and pull live gauges and DTCs from the EZ Lynk app.
2006-2007 LBZ 6.6L Duramax Tune Files & Power Levels
| Tune File | Horsepower (HP) |
|---|---|
| Tow | +50 |
| Street | +90 |
| Performance | +120 |
| Extreme | +150 |
| SOTF (Switch on the Fly) | 0-150 |
Figures dyno-validated on a stock truck. Results vary with fuel quality, mods, and altitude.
What's Included With Your Duramax EZ Lynk Tune Package
- EZ Lynk Auto Agent 3 device + OBD-II cable (if purchased)
- VIN-specific custom tune files (Tow / Street / Performance / Extreme)
- 4-Week, Lifetime, or Upgrade tune support (your selection)
- Transmission (TCM) calibrations where supported
- Email and in-app support during installation
EZ Lynk Auto Agent 3 Installation
- Plug the Auto Agent 3 into the OBD-II port and connect it to your home WiFi.
- Add Tactical Diesel as your technician/support inside the EZ Lynk app.
- We build your VIN-specific tunes and push them to your device.
- Select your tune level in the app and flash (~10-15 min).
- Cycle the key and drive - switch levels anytime from the app.
VIN required. Every custom tune is built for your specific VIN and ECM - post-purchase vehicle changes incur a re-flash fee.
2006-2007 LBZ 6.6L Duramax Tuning Notes
- Calibrated for stock emissions hardware by default.
- The LBZ responds strongly to tuning and is a stout platform for the Street and Performance files.
2007.5-2010 LMM 6.6L Duramax - AutoAgent 3 Tuning
Custom diesel tuning for 2007.5-2010 LMM 6.6L Duramax (Silverado / Sierra 2500 HD / 3500 HD), delivered through the AutoAgent 3. Real horsepower and torque gains on the LMM 6.6L Duramax - sharper throttle response, better towing manners, and VIN-specific tune files backed by Tactical Diesel support.
EZ Lynk Auto Agent 3 Cloud Tuning
The EZ Lynk Auto Agent 3 is a cloud-based OBD-II tuning device. Plug it into your Duramax, connect it to WiFi, and your Tactical Diesel technician builds and pushes VIN-specific tune files straight to your ECM remotely - no laptop, no core return. Switch between tune levels on the fly and pull live gauges and DTCs from the EZ Lynk app.
2007.5-2010 LMM 6.6L Duramax Tune Files & Power Levels
| Tune File | Horsepower (HP) |
|---|---|
| Tow | +50 |
| Street | +90 |
| Performance | +120 |
| Extreme | +150 |
| SOTF (Switch on the Fly) | 0-150 |
Figures dyno-validated on a stock truck. Results vary with fuel quality, mods, and altitude.
What's Included With Your Duramax EZ Lynk Tune Package
- EZ Lynk Auto Agent 3 device + OBD-II cable (if purchased)
- VIN-specific custom tune files (Tow / Street / Performance / Extreme)
- 4-Week, Lifetime, or Upgrade tune support (your selection)
- Transmission (TCM) calibrations where supported
- Email and in-app support during installation
EZ Lynk Auto Agent 3 Installation
- Plug the Auto Agent 3 into the OBD-II port and connect it to your home WiFi.
- Add Tactical Diesel as your technician/support inside the EZ Lynk app.
- We build your VIN-specific tunes and push them to your device.
- Select your tune level in the app and flash (~10-15 min).
- Cycle the key and drive - switch levels anytime from the app.
VIN required. Every custom tune is built for your specific VIN and ECM - post-purchase vehicle changes incur a re-flash fee.
2007.5-2010 LMM 6.6L Duramax Tuning Notes
- Calibrated for stock emissions hardware by default.
- Improves EGT control and towing manners on the Tow and Street files.
2011-2016 LML 6.6L Duramax - AutoAgent 3 Tuning
Custom diesel tuning for 2011-2016 LML 6.6L Duramax (Silverado / Sierra 2500 HD / 3500 HD), delivered through the AutoAgent 3. Real horsepower and torque gains on the LML 6.6L Duramax - sharper throttle response, better towing manners, and VIN-specific tune files backed by Tactical Diesel support.
EZ Lynk Auto Agent 3 Cloud Tuning
The EZ Lynk Auto Agent 3 is a cloud-based OBD-II tuning device. Plug it into your Duramax, connect it to WiFi, and your Tactical Diesel technician builds and pushes VIN-specific tune files straight to your ECM remotely - no laptop, no core return. Switch between tune levels on the fly and pull live gauges and DTCs from the EZ Lynk app.
2011-2016 LML 6.6L Duramax Tune Files & Power Levels
| Tune File | Horsepower (HP) |
|---|---|
| Tow | +50 |
| Street | +90 |
| Performance | +120 |
| Extreme | +150 |
| SOTF (Switch on the Fly) | 0-150 |
Figures dyno-validated on a stock truck. Results vary with fuel quality, mods, and altitude.
What's Included With Your Duramax EZ Lynk Tune Package
- EZ Lynk Auto Agent 3 device + OBD-II cable (if purchased)
- VIN-specific custom tune files (Tow / Street / Performance / Extreme)
- 4-Week, Lifetime, or Upgrade tune support (your selection)
- Transmission (TCM) calibrations where supported
- Email and in-app support during installation
EZ Lynk Auto Agent 3 Installation
- Plug the Auto Agent 3 into the OBD-II port and connect it to your home WiFi.
- Add Tactical Diesel as your technician/support inside the EZ Lynk app.
- We build your VIN-specific tunes and push them to your device.
- Select your tune level in the app and flash (~10-15 min).
- Cycle the key and drive - switch levels anytime from the app.
VIN required. Every custom tune is built for your specific VIN and ECM - post-purchase vehicle changes incur a re-flash fee.
2011-2016 LML 6.6L Duramax Tuning Notes
- Calibrated for stock emissions hardware by default.
- Transmission (TCM) calibrations are included free on this platform.
- Shift-on-the-fly (SOTF) switching is available.
2017-2018 L5P 6.6L Duramax - MPVI3 Tuning
Custom diesel tuning for 2017-2018 L5P 6.6L Duramax (Silverado / Sierra 2500 HD / 3500 HD), delivered through the MPVI3. Real horsepower and torque gains on the 2017-2018 L5P 6.6L Duramax, tuned through HP Tuners MPVI3 (EZ Lynk is 2019+) - sharper throttle response, better towing manners, and VIN-specific tune files backed by Tactical Diesel support.
HP Tuners MPVI3 / MPVI4 Tuning
The HP Tuners MPVI3 (and MPVI4) is a laptop-based OBD-II interface for the L5P Duramax. Tactical Diesel builds your VIN-specific calibration and delivers it through HP Tuners with the required Universal Credits and ECM/TCM unlock. Read your stock file, flash the custom tune, and data-log right from the VCM Suite - Single or shift-on-the-fly (SOTF) tune packages available.
2017-2018 L5P 6.6L Duramax Tune Files & Power Levels
| Tune File | Horsepower (HP) |
|---|---|
| Tow | +50 |
| Street | +90 |
| Performance | +120 |
| Extreme | +150 |
| SOTF (Switch on the Fly) | 0-150 |
Figures dyno-validated on a stock truck. Results vary with fuel quality, mods, and altitude.
What's Included With Your L5P Duramax MPVI Tune Package
- HP Tuners MPVI3 or MPVI4 interface (if purchased) + required Universal Credits
- VIN-specific custom tune file(s) - Single or SOTF
- ECM unlock; unlocked T87A TCM required for transmission tuning
- Data-logging configuration for your setup
- Email support during installation and data-logging
HP Tuners MPVI3 / MPVI4 Installation
- Install VCM Suite and plug the MPVI into the OBD-II port.
- Read and send us your stock file + VIN (and unlock if required).
- We build your custom calibration and return it with credits applied.
- Write the tune with VCM Editor/Scanner (~10-15 min).
- Cycle the key and data-log to confirm.
VIN required. Every custom tune is built for your specific VIN and ECM - post-purchase vehicle changes incur a re-flash fee.
2017-2018 L5P 6.6L Duramax Tuning Notes
- 2017-2018 L5P is tuned via HP Tuners (MPVI3/MPVI4) - EZ Lynk cloud tuning did not arrive until 2019.
- An unlocked T87A TCM is required for transmission tuning; ECM unlock and Universal Credits apply.
- Calibrated for stock emissions hardware by default.
2017-2018 L5P 6.6L Duramax - MPVI4 Tuning
Custom diesel tuning for 2017-2018 L5P 6.6L Duramax (Silverado / Sierra 2500 HD / 3500 HD), delivered through the MPVI4. Real horsepower and torque gains on the 2017-2018 L5P 6.6L Duramax, tuned through HP Tuners MPVI4 (EZ Lynk is 2019+) - sharper throttle response, better towing manners, and VIN-specific tune files backed by Tactical Diesel support.
HP Tuners MPVI3 / MPVI4 Tuning
The HP Tuners MPVI3 (and MPVI4) is a laptop-based OBD-II interface for the L5P Duramax. Tactical Diesel builds your VIN-specific calibration and delivers it through HP Tuners with the required Universal Credits and ECM/TCM unlock. Read your stock file, flash the custom tune, and data-log right from the VCM Suite - Single or shift-on-the-fly (SOTF) tune packages available.
2017-2018 L5P 6.6L Duramax Tune Files & Power Levels
| Tune File | Horsepower (HP) |
|---|---|
| Tow | +50 |
| Street | +90 |
| Performance | +120 |
| Extreme | +150 |
| SOTF (Switch on the Fly) | 0-150 |
Figures dyno-validated on a stock truck. Results vary with fuel quality, mods, and altitude.
What's Included With Your L5P Duramax MPVI Tune Package
- HP Tuners MPVI3 or MPVI4 interface (if purchased) + required Universal Credits
- VIN-specific custom tune file(s) - Single or SOTF
- ECM unlock; unlocked T87A TCM required for transmission tuning
- Data-logging configuration for your setup
- Email support during installation and data-logging
HP Tuners MPVI3 / MPVI4 Installation
- Install VCM Suite and plug the MPVI into the OBD-II port.
- Read and send us your stock file + VIN (and unlock if required).
- We build your custom calibration and return it with credits applied.
- Write the tune with VCM Editor/Scanner (~10-15 min).
- Cycle the key and data-log to confirm.
VIN required. Every custom tune is built for your specific VIN and ECM - post-purchase vehicle changes incur a re-flash fee.
2017-2018 L5P 6.6L Duramax Tuning Notes
- For customers who already run an MPVI4 interface.
- An unlocked T87A TCM is required for transmission tuning; ECM unlock and Universal Credits apply.
- Calibrated for stock emissions hardware by default.
2019-2023 L5P 6.6L Duramax - AutoAgent 3 Tuning
Custom diesel tuning for 2019-2023 L5P 6.6L Duramax (Silverado / Sierra 2500 HD / 3500 HD), delivered through the AutoAgent 3. Real horsepower and torque gains on the 2019-2023 L5P 6.6L Duramax - EZ Lynk cloud tuning is available from 2019 - sharper throttle response, better towing manners, and VIN-specific tune files backed by Tactical Diesel support.
EZ Lynk Auto Agent 3 Cloud Tuning
The EZ Lynk Auto Agent 3 is a cloud-based OBD-II tuning device. Plug it into your Duramax, connect it to WiFi, and your Tactical Diesel technician builds and pushes VIN-specific tune files straight to your ECM remotely - no laptop, no core return. Switch between tune levels on the fly and pull live gauges and DTCs from the EZ Lynk app.
2019-2023 L5P 6.6L Duramax Tune Files & Power Levels
| Tune File | Horsepower (HP) |
|---|---|
| Tow | +50 |
| Street | +90 |
| Performance | +120 |
| Extreme | +150 |
| SOTF (Switch on the Fly) | 0-150 |
Figures dyno-validated on a stock truck. Results vary with fuel quality, mods, and altitude.
What's Included With Your Duramax EZ Lynk Tune Package
- EZ Lynk Auto Agent 3 device + OBD-II cable (if purchased)
- VIN-specific custom tune files (Tow / Street / Performance / Extreme)
- 4-Week, Lifetime, or Upgrade tune support (your selection)
- Transmission (TCM) calibrations where supported
- Email and in-app support during installation
EZ Lynk Auto Agent 3 Installation
- Plug the Auto Agent 3 into the OBD-II port and connect it to your home WiFi.
- Add Tactical Diesel as your technician/support inside the EZ Lynk app.
- We build your VIN-specific tunes and push them to your device.
- Select your tune level in the app and flash (~10-15 min).
- Cycle the key and drive - switch levels anytime from the app.
VIN required. Every custom tune is built for your specific VIN and ECM - post-purchase vehicle changes incur a re-flash fee.
2019-2023 L5P 6.6L Duramax Tuning Notes
- EZ Lynk Auto Agent 3 cloud tuning is available on 2019+ L5P trucks.
- Calibrated for stock emissions hardware by default.
- Shift-on-the-fly (SOTF) switching is available.
2024-2026 L5P 6.6L Duramax - RTD Tuning
Custom diesel tuning for 2024-2026 L5P 6.6L Duramax (Silverado / Sierra 2500 HD / 3500 HD), delivered through the RTD. Real horsepower and torque gains on the newest 2024-2026 L5P 6.6L Duramax, tuned through the HP Tuners RTD - sharper throttle response, better towing manners, and VIN-specific tune files backed by Tactical Diesel support.
HP Tuners RTD Tuning
The HP Tuners RTD (Remote Tuning Device) is a plug-in OBD-II tuner for the newest L5P Duramax. Tactical Diesel builds your VIN-specific calibration and delivers it to the RTD through the HP Tuners cloud - no laptop needed to flash. Switch tune levels and data-log from the RTD app.
2024-2026 L5P 6.6L Duramax Tune Files & Power Levels
| Tune File | Horsepower (HP) |
|---|---|
| Tow | TBD |
| Street | TBD |
| Performance | TBD |
| Extreme | TBD |
| SOTF (Switch on the Fly) | TBD |
Figures dyno-validated on a stock truck. Results vary with fuel quality, mods, and altitude.
What's Included With Your L5P Duramax RTD Tune Package
- HP Tuners RTD device (if purchased) + required Universal Credits
- VIN-specific custom tune files (Tow / Street / Performance / Extreme)
- ECM unlock where required
- Cloud-delivered tune revisions during your support period
- Email and in-app support during installation
HP Tuners RTD Installation
- Plug the RTD into the OBD-II port and pair it with the RTD app.
- Send us your VIN and stock read; we apply the required credits.
- We build your VIN-specific tunes and deliver them to the RTD cloud.
- Download and flash your tune level from the app (~10-15 min).
- Cycle the key and data-log to confirm.
VIN required. Every custom tune is built for your specific VIN and ECM - post-purchase vehicle changes incur a re-flash fee.
2024-2026 L5P 6.6L Duramax Tuning Notes
- Newest L5P platform - tuned through the HP Tuners RTD with required Universal Credits and ECM unlock.
- Calibrated for stock emissions hardware by default.
- Contact us to confirm current power levels for your exact truck.
- Choosing a selection results in a full page refresh.